1991 year
Main Index

Issue 1

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX001

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP001

Editorial Janet Dean, pp va DOI:10.1039/DT99100000va

Instructions for authors (1991) J. Chem. Soc., Dalton Trans. DOI:10.1039/DT9910000vii

Reduction-oxidation properties of organotransition-metal complexes. Part 32. One-electron oxidation of [Co(4-cot)-(-C5Me5)](cot = cyclooctatetraene): redox-induced polycyclic ring transformations of the resulting dimer, and crystal structure of [Co2(4:4-C16H16)(-C5Me5)2] R. Paul Aggarwal, Neil G. Connelly, Barry J. Dunne, Mark Gilbert and A. Guy Orpen, pp 1 DOI:10.1039/DT9910000001

Direct electrochemical synthesis and crystallographic characterization of metal diphenylphosphido and diphenylthiophosphinato compounds, and some derivatives Theodore A. Annan, Rajesh Kumar and Dennis G. Tuck, pp 11 DOI:10.1039/DT9910000011

Studies of the oxidation of elemental phosphorus by substituted ortho-benzoquinones Theodore A. Annan, Zhigang Tian and Dennis G. Tuck, pp 19 DOI:10.1039/DT9910000019

X-Ray crystal structures and electron spin resonance spectroscopic characterization of mixed-ligand chromium(III) complexes with L-aspartate or pyridine-2,6-dicarboxylate and 1,10-phenanthroline or 2,2:6,2-terpyridyl Umberto Casellato, Rodolfo Graziani, Raffaele P. Bonomo and Angel J. Di Bilio, pp 23 DOI:10.1039/DT9910000023

Metal complexes that transport electrons across liquid membranes: the [FeII,IIIL3]2+,3+ redox system (L = 4,4-di-tert-butyl-2,2-bipyridine) Giancarlo De Santis, Luigi Fabbrizzi, Antonio Poggi and Barbara Seghi, pp 33 DOI:10.1039/DT9910000033

Structural and magnetic characterisation of the compound [NEt4][Cr2(EtO)3{H2B(pz)2}2(NCS)2](pz = 1-pyrazolyl), a binuclear complex of chromium(III) with three bridging ethoxo groups Alessandro Bencini, Massimo Di Vaira and Fabrizio Mani, pp 41 DOI:10.1039/DT9910000041

Conformational analyses of the isomers of the systems [Co(men)n(en)3-n]3+(men =N-methylethane-1,2-diamine, en = ethane-1,2-diamine; n= 1-3) Ian M. Atkinson, F. Richard Keene and Graeme H. Searle, pp 45 DOI:10.1039/DT9910000045

Crystal and molecular structure of catena-5,7,12,14-tetramethyl-5-aci-nitromethyl-1,4,8,11-tetraazacyclotetradec-11-enenickel(II) perchlorate dihydrate Janusz W. Krajewski, Przemysaw Gluziaski, Bohdan Korybut-Daszkiewicz, Anatolii Mishnyov and Andrejas Kemme, pp 53 DOI:10.1039/DT9910000053

Synthesis of metal molybdenum tellurides of composition Mo6-xMxTe8(M = Ru or Rh) Frank J. Berry and Christopher D. Gibbs, pp 57 DOI:10.1039/DT9910000057

Crystal and molecular structure of the compound [(salen) VOVO(salen)][I5]·MeCN [salen =N,N-ethylene-bis(salicylideneiminate)] and the preparation of similar complexes with other Schiff-base ligands Adrian Hills, David L. Hughes, G. Jeffery Leigh and J. Roger Sanders, pp 61 DOI:10.1039/DT9910000061

Zerovalent platinum chemistry. Part 12. Unexpected reactivity of [Pt(PPh3)2(O2)] towards ortho and para quinones and the structures of 1 : 1 adducts with p-benzoquinone and 1,4-naphthoquinone Maddalena Pizzotti, Sergio Cenini, Renato Ugo and Francesco Demartin, pp 65 DOI:10.1039/DT9910000065

Phenylation of cationic allyl palladium(II) complexes by tetraphenylborate. Synthesis of -diimine olefin palladium(0) complexes and mechanistic aspects Bruno Crociani, Francesca Di Bianca, Paolo Uguagliati, Luciano Canovese and Adriano Berton, pp 71 DOI:10.1039/DT9910000071

Synthesis, physical characterisation and chemical properties of methylsulphur trifluoride, CH3SF3 Anthony J. Downs, Alan M. Forster, G. Sean McGrady and Ben J. Taylor, pp 81 DOI:10.1039/DT9910000081

Kinetics and mechanism of the oxidation of hypophosphite with N-chlorotoluene-p-sulphonamide (chloramine T) catalysed by osmium (VIII) in alkaline solution Juzar Hussain, Som Kant Mishra and Preen Dutt Sharma, pp 89 DOI:10.1039/DT9910000089

Chemistry of polynuclear metal complexes with bridging carbene or carbene ligands. Part 108. Synthesis and reactions of the alkylidynetungsten complexes [W(CR)(CO)2{(F3B)C(pz)3}](R = Me or C6H4Me-4, pz = pyrazol-1-yl) and their use as reagents for preparing di-and tri-metal compounds Peter K. Byers and F. Gordon A. Stone, pp 93 DOI:10.1039/DT9910000093

Synthesis and crystallographic characterisation of pendant-arm macrocyclic complexes derived from 1,4,7-triazacyclononane: mono- and di-(3-aminopropyl)-1,4,7-triazacyclononane as ligands Denis G. Fortier and Alexander McAuley, pp 101 DOI:10.1039/DT9910000101

Electrochemical reversibility of the CuI-Cu0 couple in bis[2,9-di(o-substituted phenyl)-1,10-phenanthroline]-copper(I) complexes. Stability of the corresponding copper(0) species Md. Athar Masood and Panthappally S. Zacharias, pp 111 DOI:10.1039/DT9910000111

Syntheses, crystal structures and spectroscopic characterization of some confacial bioctahedral ditungsten(III) complexes with thioether bridges: [Cl3W(µ-Et2S)3WCl3]·MeCN and [SMe3][Cl3W-(µ-Me2S)2(µ-Cl)WCl3]·EtCN P. Michael Boorman, Xiaoliang Gao, Gavin K. W. Freeman and James F. Fait, pp 115 DOI:10.1039/DT9910000115

Transformation of a methyleneamide ligand at molybdenum: electrochemical oxidation to a cyanide, reactions with elemental oxygen, sulphur or selenium and X-ray crystal structures of trans-[Mo(CN)Cl(dppe)2]·MeOH and trans-[Mo(NCS)Cl(dppe)2]; electroreduction of the cyanide to an aminocarbyne, trans-[Mo(CNH2)Cl(dppe)2](dppe = Ph2PCH2CH2PPh2) Adrian Hills, David L. Hughes, Colin J. Macdonald, Modher Y. Mohammed and Christopher J. Pickett, pp 121 DOI:10.1039/DT9910000121

Reactions of the seven-co-ordinate complexes [MI2(CO)3(NCMe)2] and [MI2(CO)3(NCMe)L](M = Mo or W; L = PPh3, AsPh3 or SbPh3) with dithiocarbamate ligands Paul K. Baker, Stuart G. Fraser and Dafydd Ap Kendrick, pp 131 DOI:10.1039/DT9910000131

Preparation and carbonyl-substitution reactions of hexacarbonyldicobalt-complexed 1,3-dioxa-2-silacyclohept-5-ynes and 1,3,8,10-tetraoxa-2,9-disilacyclotetradeca-5,12-diynes. X-Ray crystal structure of [(Ph3P)(OC)5Co2-{µ-(C2CH2OSiPh2OCH2)2}Co2(CO)5(PPh3)] R. Harry Cragg, John C. Jeffery and Michael J. Went, pp 137 DOI:10.1039/DT9910000137

Chiral polytungstometalates [WM3(H2O)2(XW9O34)2]12-(X = M = Zn or CoII) and their M-substituted derivatives. Syntheses, chemical, structural and spectroscopic study of some D,L sodium and potassium salts Claude M. Tourné, Gilbert F. Tourné and Frans Zonnevijlle, pp 143 DOI:10.1039/DT9910000143

Notes. Geometric effects on the redox properties of complexes [RuX2(R2SO)n(R2S)4-n] and the implications for oxidation catalysis Dennis Riley and James Lyon III , pp 157 DOI:10.1039/DT9910000157

Refereeing procedure and policy (1991) J. Chem. Soc., Dalton Trans. DOI:10.1039/DT991000xxvi

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX003

Issue 2

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX005

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP005

X-Ray and potentiometric studies on a pentanuclear copper(II) complex with -alaninehydroxamic acid Barbara Kurzak, Etelka Farkas, Tadeusz Glowiak and Henryk Kozlowski, pp 163 DOI:10.1039/DT9910000163

Electrical conduction and electron spin resonance studies on the mixed crystals of K[Pt1-xAux(mnt)2]·H2O Shoichi Kutsumizu, Norimichi Kojima and Ikuji Tsujikawa, pp 169 DOI:10.1039/DT9910000169

Synthesis, crystal structure and reactions of zerovalent 16-electron bis(-cycloheptatriene)zirconium Jennifer C. Green, Malcolm L. H. Green and Neil M. Walker, pp 173 DOI:10.1039/DT9910000173

Electronic structure and photoelectron spectroscopy of Al(Me3CNCHCHNCMe3)2 and Ga(Me3CNCHCHNCMe3)2 F. Geoffrey N. Cloke, Christopher I. Dalby, P. James Daff and Jennifer C. Green, pp 181 DOI:10.1039/DT9910000181

Polyhedral osmaborane chemistry: the platination of [4,4,4-(CO)(PPh3)2-nido-4-OsB5H9] and the isolation, nuclear magnetic resonance properties, and molecular structures of two seven-vertex nido-type dimetallaheptaboranes [(CO)(PPh3)2HOs(PMe2Ph)ClPtB5H7] and [(CO)(PPh3)(PPh2)Os(PPh3)PtB5H7Ph] Jonathan Bould, Janet E. Crook, Norman N. Greenwood and John D. Kennedy, pp 185 DOI:10.1039/DT9910000185

Preparation, characterization and activity of palladium(II) halide complexes with diethyl 2-quinolylmethylphosphonate (2-dqmp). X-Ray crystal structures of trans-[Pd(2-dqmp)2X2](X = Cl or Br) Ljerka Tuek-Boi, Ivanka Matijai, Gabriele Bocelli, Gianluca Calestani, Ariella Furlani, Vito Scarcia and Aristotelis Papaioannou, pp 195 DOI:10.1039/DT9910000195

Cyclometallation of phenylphosphine and neopentyl ligands in ruthenium(II) complexes: synthesis and crystal structure of the orthometallated complexes [Ru(C6H4PR1R2)(CH2CMe3)(6-C6Me6)](R1= R2= Ph; R1= Me, R2= Ph; R1= R2= Me) and of the metallacyclobutanes [Ru(CH2CMe2CH2)(-C6Me6)(PPhR1R2)](R1= R2= Ph; R1= Me, R2= Ph) Pietro Diversi, Giovanni Ingrosso, Antonio Lucherini, Fabio Marchetti, Victor Adovasio and Mario Nardelli, pp 203 DOI:10.1039/DT9910000203

Reaction of [Os4(µ-H)4(CO)12] with cyclohexa-1,3-diene via chemical activation: synthesis and structural characterisation of [Os4(µ-H)2(CO)10(6-C6H6)] and [Os4(CO)9(6-C6H6)(4-C6H8)] and their interconversion Hong Chen, Brian F. G. Johnson, Jack Lewis, Dario Braga, Fabrizia Grepioni and Emilio Parisini, pp 215 DOI:10.1039/DT9910000215

Synthesis and characterisation of a series of tetra- and octa-copper(II) complexes with macrocyclic ligands Vickie Mckee and Santokh S. Tandon, pp 221 DOI:10.1039/DT9910000221

Crystal structures of tris[N-(4-methylphenyl)acetohydroxa-mato]iron(III)-acetone (1/1) and tris(N-methyl-4-methylbenzo-hydroxamato)iron(III)[and gallium(III)]-acetone-water(1/1/1). Structure-stability relationships for the hydroxamate complexes of Fe3+ and Ga3+ Andreas Dietrich, Krzysztof A. Fidelis, Douglas R. Powell, Dick van Der Helm and D. Larry Eng-Wilmot, pp 231 DOI:10.1039/DT9910000231

Acylation and esterification of the aryloxide ligand in [AIMe(dbmp)2]. Crystal structures of [AIMe(dbmp)-(bhmap)], Hbhmap and OC(dbmp)But(Hdbmp = 2,6-di-tert-butyl-4-methylphenol, Hbhmap = 3-tert-butyl-2-hydroxy-5-methylacetophenone) Michael B. Power, Simon G. Bott, Elizabeth J. Bishop, Kelli D. Tierce, Jerry L. Atwood and Andrew R. Barron, pp 241 DOI:10.1039/DT9910000241

Catalytic mechanism for the biomimetic oxidation of benzoin by p-benzoquinone in the presence of {Fe4S4} complexes with bulky arenethiolate or cysteine-containing tripeptide ligands Takashi Sugawara, Norikazu Ueyama and Akira Nakamura, pp 249 DOI:10.1039/DT9910000249

Heterotrinuclear angular aggregates of rhodium, iridium, palladium and Group 11 metals. X-Ray structure of the complex [(cod)2Rh2(µ3-C7H4NS2)2Ag(O2ClO2)](cod = cycloocta-1,5-diene) Miguel A. Ciriano, Jesús J. Pérez-Torrente, Luis A. Oro, Antonio Tiripicchio and Marisa Tiripicchio-Camellini, pp 255 DOI:10.1039/DT9910000255

Metal complexes containing inorganic (carbon-free) chelate rings. Reactivity of the [ReO]3+ core toward bis(diphenyl-phosphino)amine derivatives. Crystal structures of [ReOCl2{N(XPPh2)2}(PPh3)](X = O or S) and [ReO(OEt)-{N(SPPh2)2}2] Roberto Rossi, Andrea Marchi, Luciano Magon, Umberto Casellato, Sergio Tamburini and Rodolfo Graziani, pp 263 DOI:10.1039/DT9910000263

tert-Butylimido complexes of osmium-(VIII), -(VII) and -(VI). X-Ray crystal structures of [(ButN)2Os(µ-NBut)2Os(NBut)(µ-O)]2, [Os(NBut)2(µ-NBut)]2 and [Os(NBut)2(µ-NBut)]2[BF4]2 Andreas A. Danopoulos, Geoffrey Wilkinson, Bilquis Hussain-Bates and Michael B. Hursthouse, pp 269 DOI:10.1039/DT9910000269

Template syntheses of chiral tetradentate ligands derived from L-amino acids. Structural and spectroscopic characterization of the free ligands and of their copper(II) complexes Peter Comba, Trevor W. Hambley, Geoffrey A. Lawrance, Lisandra L. Martin, Peter Renold and Katalin Váarnagy, pp 277 DOI:10.1039/DT9910000277

X-Ray structural and photoluminescence spectroscopic investigation of the europium octamolybdate polymer Eu2(H2O)12[Mo8O27]·6H2O and intramolecular energy transfer in the crystalline lattice Toshihiro Yamase and Haruo Naruke, pp 285 DOI:10.1039/DT9910000285

Control of metal-ion size-based selectivity through the structure of the oxygen-donor pendant groups on lariat ethers. A crystallographic and thermodynamic study Kirty V. Damu, Robert D. Hancock, Peter W. Wade, Jan C. A. Boeyens, David G. Billing and Susan M. Dobson, pp 293 DOI:10.1039/DT9910000293

Studies of phosphazenes. Part 33. Thermal rearrangement of alkoxy(p-methylphenoxy)cyclophosphazenes: a synthetic route to oxocyclophosphazanes, phosphazadienes and phosphaz-1-enes Sakthivel Karthikeyan and Setharampattu S. Krishnamurthy, pp 299 DOI:10.1039/DT9910000299

Reactivity of heterocyclic nitrogen donors in systems containing the tetrachloroaurate(III) anion Luciano Canovese, Lucio Cattalini, Michele Tomaselli and Martin L. Tobe, pp 307 DOI:10.1039/DT9910000307

Oxidation of cyanide-bridged dimanganese(I) complexes: redox-induced isomerisation as a probe of intermetallic interaction Gabino A. Carriedo, Neil G. Connelly, M. Carmen Crespo, Ian C. Quarmby, Victor Riera and Gillian H. Worth, pp 315 DOI:10.1039/DT9910000315

Reactions of vanadium(IV) halide complexes containing Schiff-base ligands with hydrazines; preparation and structure of [N,N-ethylenebis(salicylideneiminato)]bis-(phenylhydrazine)vanadium(III) iodide Adrian Hills, David L. Hughes, G. Jeffery Leigh and J. Roger Sanders, pp 325 DOI:10.1039/DT9910000325

Alkali-metal complexes with neutral molecular receptors containing nitrogen donor atoms: a crystallographic and multinuclear magnetic resonance study Massimo Di Vaira, Barbara Cosimelli, Fabrizio Mani and Piero Stoppioni, pp 331 DOI:10.1039/DT9910000331

Notes. Activation parameters for the reaction of aquocobalamin (vitamin B12a) with small anionic and neutral ligands Helder M. Marques, pp 339 DOI:10.1039/DT9910000339

Ground- and excited-state properties of some ligand-bridged ruthenium(II) polypyridyl complexes with spectator-ligand-based emission Kuppuswamy Kalyanasundaram, Michael Grätzel and Mohammad K. Nazeeruddin, pp 343 DOI:10.1039/DT9910000343

Anions [Fe2(CO)8]2- and [Fe2(CO)6(µ-CO)(µ-PPh2)]- as building blocks for the synthesis of mixed-metal clusters. Crystal structure of [Fe2(CO)6(µ-CO)(µ-PPh2){µ-Cu(PPh3)}] Montserrat Ferrer, Roser Reina, Oriol Rossell, Miquel Seco and Xavier Solans, pp 347 DOI:10.1039/DT9910000347

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX007

Issue 3

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX009

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP009

Synthesis of ruthenium-rhodium heterobimetallic complexes via ring-opening reactions of bidentate phosphine ligands; crystal structures of [Ru(C5H5)Cl{Ph2PC(CH2)PPh2}] and [(C5H5)Ru(µ-CO)2{µ-Ph2PC(CH2)PPh2}RhCl2] Michael P. Brown, Diane Burns, Ranjit Das, P. Ann Dolby, Marjorie M. Harding, R. Wayne Jones, Edward J. Robinson and Anthony K. Smith, pp 351 DOI:10.1039/DT9910000351

Synthesis and reactions of some tris(2-methylphenyl)silanolatometal compounds. Crystal and molecular structures of [Ta{OSi(C6H4Me-2)3}Cl4]·1.5Et2O and [Ta{OSi(C6H4Me-2)3}Me3Cl] Simon G. Bott, Muhammed A. Mazid, Michael B. Hursthouse and Alice C. Sullivan, pp 355 DOI:10.1039/DT9910000355

Structure of polymeric antimony silver(I)(+)-tartrate Dalius S. Sagatys, Graham Smith, Daniel E. Lynch and Colin H. L. Kennard, pp 361 DOI:10.1039/DT9910000361

Magnetostructural characterization of a monohydroxo-bridged, 1,1,2,2-tetrakis(2-pyridyl)ethylene-bridged copper(II) dimer Evgenia Spodine, Jorge Manzur, María Teresa Garland, Miguel Kiwi, Octavio Peña, Daniel Grandjean and Loic Toupet, pp 365 DOI:10.1039/DT9910000365

Synthesis and reactions with electrophiles and nucleophiles of the ruthenium(I) complex [Ru2(µ-C10H8N2)(CO)6]. Crystal structure of [Ru2(µ-C10H8N2)(CO)4{P(OPh)3}2](C10H10N2= 1,8-diaminonaphthalene) Javier A. Cabeza, José M. Fernández-Colinas, Victor Riera, Maria Angela Pellinghelli and Antonio Tiripicchio, pp 371 DOI:10.1039/DT9910000371

Synthesis, reactivities and electrochemistry of trans-dioxoruthenium(VI) complexes of -aromatic diimines Chi-Ming Che, Wai-Ho Leung, Chi-Keung Li and Chung-Kwong Poon, pp 379 DOI:10.1039/DT9910000379

Co-ordination chemistry of 2,6-diphenylthiophenol. The syntheses and X-ray crystal structures of some molybdenum and rhodium complexes with - or 6-phenyl-metal interactions Peter T. Bishop, Jonathan R. Dilworth, Terrence Nicholson and Jon Zubieta, pp 385 DOI:10.1039/DT9910000385

One-electron transfer reactions of cyclooctatetraene (cot) complexes: electron spin resonance studies of 60CO -irradiated [Fe(CO)2L(4-cot)][L = CO or P(OPh)3] Martyn C. R. Symons, Jane L. Wyatt and Neil G. Connelly, pp 393 DOI:10.1039/DT9910000393

Chromovanadates Oliver W. Howarth and David Winter, pp 399 DOI:10.1039/DT9910000399

Refinement by the rietveld method and extended X-ray absorption fine structure of a 1,2,3-type ceramic oxide containing cobalt instead of copper Giorgio Nardin, Lucio Randaccio, Ennio Zangrando, Sergio Bruckner, Gilberto Vlaic and Franco Buffa, pp 403 DOI:10.1039/DT9910000403

Surface co-ordination reactions of -dicarbonyl compounds with metallic copper Gi Xue, Jain Dong and Quan Sheng, pp 407 DOI:10.1039/DT9910000407

Electrochemically generated copper(II), tin(II), bismuth(III) and zinc(II) complexes in dichloromethane containing tetrabutylammonium perchlorate, tetrafluoroborate or hexafluorophosphate as the electrolyte Alan M. Bond, Andrzej Bobrowski and Fritz Scholz, pp 411 DOI:10.1039/DT9910000411

Thermal and methyllithium-assisted cyclometallation reactions of 3-allyl(methyl)(tertiary phosphine or phosphite)platinum(II) complexes Mitsuo Sano and Yukio Nakamura, pp 417 DOI:10.1039/DT9910000417

Synthesis and dynamic behaviour of rhodium(I) complexes containing the di-2-pyridyl sulphide ligand Giuseppe Tresoldí, Pasquale Piraino, Enrico Rotondo and Felice Faraone, pp 425 DOI:10.1039/DT9910000425

Mixed tetranuclear rhenium-ruthenium compounds formed by carbon-sulphur bond cleavage in reactions of [Re2(pyS)2(CO)6](pyS = pyridine-2-thionate) with [Ru3(CO)12]. Crystal structures of [ReRu3(µ4-S)(µ-C5H4N)(CO)14] and [Re2Ru2(µ-S)(µ-C5H4N)(µ-pyS)(CO)13] Bruce Cockerton, Antony J. Deeming, Mazurul Karim and Kenneth I. Hardcastle, pp 431 DOI:10.1039/DT9910000431

Platinum-catalysed isomerisations of 1,2-disilylhex-1-enes Toshio Suzuki, Peter Y. Lo and Gerry A. Lawless, pp 439 DOI:10.1039/DT9910000439

Generation of simple enols in non-aqueous solution by fast double-bond migration of allylic alcohols with rhodium(I) and iridium(I) complexes Chong Shik Chin, Byeongno Lee, Sangtae Kim and Jongpil Chun, pp 443 DOI:10.1039/DT9910000443

Estimated formation constants for the complexation of methylmercury(II) by captopril {1-[(2S)-3-mercapto-2-methyl-1-oxopropyl]-L-proline}: evidence of stronger binding to the cis isomer of the drug Anvarhusein A. Isab, pp 449 DOI:10.1039/DT9910000449

Control of axial-equatorial interactions in (dimethylglyoximato)cobalt(III) complexes. Part 1. Counter cation effect on the strength of the intermolecular hydrogen bond, OH O-, of trans-bis(dimethylglyoximato)dinitrocobaltate(III) anions and crystal structure of the tetramethylammonium salt Noboru Yoshida, Akio Furusaki and Masatoshi Fujimoto, pp 453 DOI:10.1039/DT9910000453

An investigation of the co-ordination properties of (2,3,7,8,12,13,17,18-octamethylcorrolato)iron(III) by nuclear magnetic resonance spectroscopy Silvia Licoccia, Maurizio Paci, Roberto Paolesse and Tristano Boschi, pp 461 DOI:10.1039/DT9910000461

Studies of the bonding in iron(II) cyclopentadienyl and arene sandwich compounds. Part 2. Correlations and interpretations of carbon-13 and iron-57 nuclear magnetic resonance and iron-57 mössbauer data Andrew Houlton, John R. Miller, Roger M. G. Roberts and Jack Silver, pp 467 DOI:10.1039/DT9910000467

Chloride-supported tungsten alkyne complexes. Synthesis, electronic and molecular structures of [W2Cl4(µ-Cl)2(µ-C2R2)(thf)2](R = H or Me) and [WCl4(-C2Me2)(thf)](thf = tetrahydrofuran) Simon G. Bott, David L. Clark, Malcolm L. H. Green and Philip Mountford, pp 471 DOI:10.1039/DT9910000471

Phosphorus-31 nuclear magnetic resonance parameters for amino compounds with the -tetraphosphorus trisulphide skelton Bruce W. Tattershall, pp 483 DOI:10.1039/DT9910000483

Chemically modified electrodes: tin(IV) oxide electrodes surface modified with immobilized bis(2,2-bipyridine)(2,2-bipyridine-4,4-dicarboxylato)ruthenium(II). Part 1. Synthesis and characterization Peter G. Pickup and Kenneth R. Seddon, pp 489 DOI:10.1039/DT9910000489

Ferromagnetic oximate-bridged complexes of chromium(III)-copper(II) and of chromium(III)-copper(II)-chromium(III) Zhuang J. Zhong, Hisashi kawa, Naohide Matsumoto, Hiroshi Sakiyama and Sigeo Kida, pp 497 DOI:10.1039/DT9910000497

Reductive nitrosylation of tetraoxometallates. Part 16. Generation and reactivity of the Os(NO)3+ moiety. Synthesis, characterisation, and electrochemistry of oxalato- and halogeno-nitrosyl derivatives of osmium; crystal and molecular structure of bis(1,10-phenanthrolinium) pentabromonitrosylosmate dihydrate Ramgopal Bhattacharyya, Alok M. Saha, Prodip N. Ghosh, Monika Mukherjee and Alok K. Mukherjee, pp 501 DOI:10.1039/DT9910000501

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 109. Reactions of tungsten-molybdenum dimetal compounds bearing carbaborane ligands with alkynes; crystal structure of [MoW(µ-C4Me4){,5-CH(C6H4Me-4)C2B9H8Me2}(-C7H7)] Stephen J. Dossett, Ian J. Hart, Massimino U. Pilotti and F. Gordon A. Stone, pp 511 DOI:10.1039/DT9910000511

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 110. Synthesis of compounds with tungsten-copper or -gold bonds; crystal structure of [NEt4][W2Cu(µ-CCCBut)2(CO)4(5-C2B9H9Me2)2]·Et2O Jean-Luc Cabioch, Stephen J. Dossett, Ian J. Hart, Massimino U. Pilotti and F. Gordon A. Stone, pp 519 DOI:10.1039/DT9910000519

Notes. Thallium thioether chemistry. Synthesis and crystal structure of [Tl([9]aneS3)]PF6([9]aneS3= 1,4,7-trithiacyclononane), showing infinite helices of [Tl([9]aneS3)]+ fragments Alexander J. Blake, John A. Greig and Martin Schröder, pp 529 DOI:10.1039/DT9910000529

Improved synthesis, solution and solid-state structure, and reactivity of [Ru2(µ-SePh)2(CO)6] Pedro L. Andreu, Javier A. Cabeza, Daniel Miguel, Victor Riera, María A. Villa and Santiago García-Granda, pp 533 DOI:10.1039/DT9910000533

Additions and corrections Nicholas Carr, M. Concepción Gimeno, F. Gordon A. Stone, Mark Bown, Xavier L. R. Fontaine, Norman N. Greenwood, John D. Kennedy and Mark Thornton-Pett, pp 537 DOI:10.1039/DT9910000537

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX011

Issue 4

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX017

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP017

Stability of (chloromethyl)platinum(II) complexes Robert McCrindle, Gilles J. Arsenault, Anuradha Gupta, Mark J. Hampden-Smith, Richard E. Rice and Alan J. McAlees, pp 949 DOI:10.1039/DT9910000949

Solution properties of the cuboidal mixed-metal cluster [Mo3NiS4(H2O)10]4+ including complexing (at Ni) and redox properties Paul W. Dimmock, Gert J. Lamprecht and A. Geoffrey Sykes, pp 955 DOI:10.1039/DT9910000955

Halide-transfer reactions involving bismuth(III) chloride: synthesis and identification of the ternary complexes BiCl3·SbCl5·4MeCN, 2MgCl2·4BiCl3·12MeCN and 3MgCl2·4BiCl3·18MeCN. Structural characterisation of 2MgCl2·4BiCl3·12MeCN as [Mg(MeCN)6]2[Bi4Cl16] and its structural relationships with other complex chlorobismuth(III) anions Gerald R. Willey, Helen Collins and Michael G. B. Drew, pp 961 DOI:10.1039/DT9910000961

Molecular structure of gaseous titanium tris(tetrahydroborate), Ti(BH4)3: experimental determination by electron diffraction and molecular orbital analysis of some Ti(BH4)3 derivatives C. John Dain, Anthony J. Downs, Michael J. Goode, David G. Evans, Karen T. Nicholls, David W. H. Rankin and Heather E. Robertson, pp 967 DOI:10.1039/DT9910000967

Actinide complexes of the calixarenes. Part 1. Syntheses and crystal structures of bis(homo-oxa)-p-tert-butylcalix[4]arene and its uranyl ion complex Jack M. Harrowfield, Mark I. Ogden and Allan H. White, pp 979 DOI:10.1039/DT9910000979

Thiosulphate-catalysed reduction of tris(acetylacetonato)-manganese(III) and its hydrolytic derivatives in aqueous perchlorate media Rupendranath Banerjee, Rina Das and Amiya K. Chakraburtty, pp 987 DOI:10.1039/DT9910000987

Crystal structure and electronic properties of tetrakis[µ3-bis(2-pyridyl)amido]dichlorotrinickel(II)-water-acetone (1/0.23/0.5) Sujittra Aduldecha and Brian Hathaway, pp 993 DOI:10.1039/DT9910000993

Information from the mössbauer spectra of tin(IV) halide complexes with 1,3-diethylthiourea. A redetermination of the crystal structure of tetrachlorobis(1,3-diethylthiourea)tin(IV) David Tudela, Masood A. Khan and Jerold J. Zuckerman, pp 999 DOI:10.1039/DT9910000999

Tin-bromine bond lengths and mössbauer quadrupole splittings of tin(IV) bromide complexes. Crystal structure of pyridinium tetrabromodiphenylstannate(IV) David Tudela and Masood A. Khan, pp 1003 DOI:10.1039/DT9910001003

Four-versus five-co-ordination in palladium(II) and platinum(II) complexes containing 2,9-dimethyl-1,10-phenanthroline (dmphen). Crystal structures of [PtCl2(dmphen)] and [Pt(2-C2H4)Cl2(dmphen)] Francesco P. Fanizzi, Francesco P. Intini, Luciana Maresca, Giovanni Natile, Maurizio Lanfranchi and Antonio Tiripicchio, pp 1007 DOI:10.1039/DT9910001007

Synthesis of pentanuclear clusters derived from [Ru3RhH2(CO)10(PPh3)(µ-COMe)]. Crystal structures of [Ru3Rh2H2(CO)12(PPh3)2] and [Ru3RhAuH(CO)10(PPh3)2-(µ3-COMe)] John Evans, Philip M. Stroud and Michael Webster, pp 1017 DOI:10.1039/DT9910001017

Bimetallic complexes of rhenium multihydrides with silver, copper or mercury containing diphosphine ligands Stuart W. Carr, Xavier L. R. Fontaine and Bernard L. Shaw, pp 1025 DOI:10.1039/DT9910001025

Kinetic studies of the complexation of oxalate to the t2g6 hexaaqua ions of ruthenium(II) and rhodium(III) Ayyub Patel, Paul Leitch and David T. Richens, pp 1029 DOI:10.1039/DT9910001029

Synthesis of mercury-linked ruthenium clusters: the X-ray structure of the new cluster dianion [{Ru6C(CO)16}2Hg]2- and the cluster [{Ru5C(CO)14(µ-Cl)}2Hg2Cl2] Brian F. G. Johnson, Whei-Lu Kwik, Jack Lewis, Paul R. Raithby and Vijay P. Saharan, pp 1037 DOI:10.1039/DT9910001037

Ruthenium(II) compounds containing a novel strong -accepting ligand, 5, 5-dimethyl-2,2-bi-1,3,4-thiadiazole (dbtd). Crystal structure of [Ru(bipy)2(dbtd)][PF6]2·Me2CO(bipy = 2,2-bipyridine) Benne D. J. R. Fennema, Rudolf A. G. de Graaff, Ronald Hage, Jaap G. Haasnoot, Jan Reedijk and Johannes G. Vos, pp 1043 DOI:10.1039/DT9910001043

Thiocyanato and azido oxo-bridged chromium(III) dimers with aromatic diimine ligands Robert A. Holwerda, Thomas F. Tekut, Boyd G. Gafford, Jian H. Zhang and Charles J. O'Connor, pp 1051 DOI:10.1039/DT9910001051

Crystal and molecular structure and properties of the first characterized copper(II) one-dimensional polymer containing mepirizole [4-methoxy-2-(5-methoxy-3-methyl-1H-pyrazol-1-yl)-6-methylpyrimidine] Matilde Benetó, Lucia Soto, Julia García-Lozano, Emilio Escrivá, Jean-Pierre Legros and Françoise Dahan, pp 1057 DOI:10.1039/DT9910001057

Synthesis, spectroscopic and structural characterization of mono- and bi-nuclear iron(III) complexes with 2,6-diacetylpyridine bis(acylhydrazones) Alex Bonardi, Curzio Merlo, Corrado Pelizzi, Giancarlo Pelizzi, Pieralberto Tarasconi and Fabrizio Cavatorta, pp 1063 DOI:10.1039/DT9910001063

Syntheses, electrochemistry and reactivities of pyridine amide complexes of chromium(III) and manganese(III) Wa-Hung Leung, Ji-Xiang Ma, Vivian Wing-Wah Yam, Chi-Ming Che and Chung-Kwong Poon, pp 1071 DOI:10.1039/DT9910001071

Inorganic excimer. Spectroscopy, photoredox properties and excimeric emission of dicyano(4,4-di-tert-butyl-2,2-bipyridine)platinum(II) Kam-To Wan, Chi-Ming Che and Kar-Cheong Cho, pp 1077 DOI:10.1039/DT9910001077

Stoichiometry, kinetics and mechanism of the oxidation of hydroxyammonium ion with iron(III) in acetate buffers Kamlesh Arora, Pankaj Bhatnagar, Anand P. Bhargava and Yugul K. Gupta, pp 1081 DOI:10.1039/DT9910001081

Oxygenation studies. Part 9. Mechanistic studies on the oxygenation of cyclooctene at [{RhCl(C8H14)2}2] Patrick Fowler, Gordon Read, Janet Shaw and Vladimir ik, pp 1087 DOI:10.1039/DT9910001087

Wavelength dependence of photocatalytic cyclohexane dehydrogenation by carbonyl- and thiocarbonyl-(chloro)phosphine rhodium(I) complexes Aki Iwamoto, Hiroaki Itagaki and Yasukazu Saito, pp 1093 DOI:10.1039/DT9910001093

Preparation of salts of the 5,5-(1,4-phenylene)bis(1,3,2,4-dithiadiazolylium) dication and of its 1,2- and 1,3-phenylene analogues. Preparation and crystal structure of the stacked, neutral 5,5-(1,4-phenylene)bis(1,3,2,4-dithiadiazole) Arthur J. Banister, Jeremy M. Rawson, William Clegg and Sara L. Birkby, pp 1099 DOI:10.1039/DT9910001099

Preparation, crystal structure and extended-Hückel molecular-orbital study of the free-radical complex [Ni2(cp)2(PhCN2S2)](cp =-C5H5) Arthur J. Banister, Ian B. Gorrell, William Clegg and Karl Anker Jørgensen, pp 1105 DOI:10.1039/DT9910001105

Synthesis, X-ray structures and infrared spectroelectrochemistry of orthometallated derivatives of pyrrolyl complexes of iron and manganese formed by reaction with [Os3(CO)10(MeCN)2] Stephen P. Best, Robin J. H. Clark, Antony J. Deeming, Roderick C. S. McQueen, Nicholas I. Powell, Carola Acuña, Alejandro J. Arce and Ysaura De Sanctis, pp 1111 DOI:10.1039/DT9910001111

Formation of the alkoxyalkyl complexes [M{CHMe(OMe)}(CO)2(-C5H4R)](M = Mo, R = H; M = W, R = H or Me) and their transformations by loss of MeOH into 3-propenoyl or vinyl complexes. Crystal structures of [Mo{CHMe(PPh3)}(CO)2(PPh3)(-C5H5)]BF4, [Mo(3-CH2CHCO)(CO)(PPh3)(-C5H5)] and [W(-CHCH2)(CO)2(PPh3)(-C5H4Me)] Harry Adams, Neil A. Bailey, J. Trevor Gauntlett, Ian M. Harkin, Mark J. Winter and Simon Woodward, pp 1117 DOI:10.1039/DT9910001117

Synthesis and dynamic stereochemistry of the complexes [Pt{CH3C(CH2PPh2)3}(SR)(H)](R = H or Ph) Franco Cecconi, Paolo Innocenti, Stefano Midollini, Simonetta Moneti, Alberto Vacca and Jose A. Ramirez, pp 1129 DOI:10.1039/DT9910001129

Bidentate cyclic imido complexes of molybdenum(II). Preparation, solution behaviour and X-ray crystal structure Susumu Kurishima, Nobuyuki Matsuda, Nobuchika Tamura and Takashi Ito, pp 1135 DOI:10.1039/DT9910001135

Chiral recognition of ferrocytochrome c(II) in electron-transfer reactions with cobalt(III) complexes Shigeyoshi Sakaki, Yu-ichi Nishijima and Katsutoshi Ohkubo, pp 1143 DOI:10.1039/DT9910001143

Chemistry of molybdenum. Part 6. Synthesis, spectroscopic and redox properties of some eight-co-ordinate sulphur chelates, [MoIV(S2CNR2)n(acda)4-n] and [MoV(S2CNR2)n(acda)4-n]Br (n= 2 or 3), containing MoS8 chromophores (acda = 2-aminocyclopent-1-ene-1-carbodithioate) Sujit Baran Kumar and Muktimoy Chaudhury, pp 1149 DOI:10.1039/DT9910001149

Notes. Aqueous chemistry of platinum and palladium complexes. Synthesis and crystal structure of a palladium(II) aqua complex with a cyclometallated ligand: [PdL(H2O)(ONO2)]ClO4·H2O (L = 1-methyl-2,2-bipyridin-3-ylium) Paule Castan, Joël Jaud, Smita Wimmer and Franz L. Wimmer, pp 1155 DOI:10.1039/DT9910001155

Mesogenic properties of copper(II) complexes formed from -substituted -dialdehydes and -diketones Antony B. Blake, John R. Chipperfield, Stephen Clark and Peter G. Nelson, pp 1159 DOI:10.1039/DT9910001159

Synthesis and crystal structure of the hexakis(thiocyanato-N)-cobaltate(II) anion Thembakazi N. Mali, Robert D. Hancock, Jan C. A. Boeyens and Ebeth L. Oosthuizen, pp 1161 DOI:10.1039/DT9910001161

Kinetics and mechanism of the nickel(II)- and copper(II)- promoted reduction of di-2-pyridyl ketone with sodium tetrahydroborate Myunghyun Paik Suh, Chee-Hun Kwak and Junghun Suh, pp 1165 DOI:10.1039/DT9910001165

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX019

Back matter J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BP021

Issue 5

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX021

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP023

Sexidentate co-ordination of the pendant-arm macrocycle 6,13-dimethyl-1,4,8,11-tetraazacyclotetradecane-6,13-diamine (L1) to zinc(II). Crystal structure of [ZnL1][ClO4]2·H2O Paul V. Bernhardt, Geoffrey A. Lawrance, Marcel Maeder, Monica Rossignoli and Trevor W. Hambley, pp 1167 DOI:10.1039/DT9910001167

Co-ordination tendency of [3k]aneNk polyazacycloalkanes. Thermodynamic study of solution equilibria Andrea Bencini, Antonio Bianchi, Mauro Micheloni, Piero Paoletti, Enrique Garcia-España and Miguel Angel Niño, pp 1171 DOI:10.1039/DT9910001171

Syntheses and reactions of 2-vinyl complexes of molybdenum and tungsten [M(SC6F5){2-C(CF3)C(CF3)(PR3)}-(CF3CCCF3)(cp)] and [Mo{3-C(CF3)C(CF3)(SPri)}-(CF3CCCF3)(cp)](cp =-C5H5) N. M. Agh-Atabay, Laureano J. Canoira, Laurence Carlton and Jack L. Davidson, pp 1175 DOI:10.1039/DT9910001175

3-Diphenylphosphino-(1R)-(+)-camphor dimethylhydrazone and its complexes with Group 6 metal carbonyls: crystal structures of the hydrazone and [Mo(CO)4(PPh2C10H15NNMe2)] Sarath D. Perera, Bernard L. Shaw and Mark Thornton-Pett, pp 1183 DOI:10.1039/DT9910001183

Cadmium binding by biological ligands. Part 4. Polynuclear complexes of cadmium with 2,3-dimercaptopropane-1-sulphonic acid Alex Avdeef and Alfred R. Chemotti jun. , pp 1189 DOI:10.1039/DT9910001189

The molecular structures of gaseous tetrakis(dimethylamino)-diboron, B2(NMe2)4, and tetrakis(methoxy)diboron, B2(OMe)4, as determined by electron diffraction Paul T. Brain, Anthony J. Downs, Peter Maccallum, David W. H. Rankin, Heather E. Robertson and George A. Forsyth, pp 1195 DOI:10.1039/DT9910001195

A further study of the reaction of methylgermane with [Co2(CO)8], and some interconversions of the products. Crystal and molecular structures of [Co2{µ-Ge(Me)Co(CO)4}(CO)7] and [Co4(µ-4-GeMe)2{µ-Ge(Me)Co(CO)4}(CO)10], an edge-bridged square-bipyramidal Ge2Co4 species Skelte G. Anema, Siew Kim Lee, Kenneth M. Mackay, Brian K. Nicholson and Miranda Service, pp 1201 DOI:10.1039/DT9910001201

Convenient syntheses of the square-bipyramidal cluster, [Co4(µ-4-GeMe)2(CO)11] and the formation of [Co4(µ4-GeMe)-{µ4-GeCo(CO)4}(CO)11] and [Co4{µ4-GeMn(CO)5}-{µ4-GeCo(CO)4}(CO)11]: new Ge2Co4 clusters containing the square-bipyramidal skeleton; and the crystal structure of [Co4(µ4-GeMe){µ4-GeCo(CO)4}(CO)11] Skelte G. Anema, Siew Kim Lee, Kenneth M. Mackay, Laurie C. Mcleod, Brian K. Nicholson and Miranda Service, pp 1209 DOI:10.1039/DT9910001209

Metal-betaine interactions. Part 3. Crystal structures of polymeric diaquabis(betaine)disilver(I) dinitrate and bis(pyridine betaine)disilver(I) diperchlorate Xiao-Ming Chen and Thomas C. W. Mak, pp 1219 DOI:10.1039/DT9910001219

Heterotetranuclear M2(do)M2(d8)(M = Ti or Zr, M= Rh or Ir) complexes containing pyridine-3,5-dicarboxylate as an assembling ligand. Crystal structure of [(5-C5H5)2Ti{µ-3,5-C5H3N(CO2)2}2Ti(5-C5H5)2] Carmela Grazia Arena, Giuseppe Bruno and Felice Faraone, pp 1223 DOI:10.1039/DT9910001223

Crystal structures, mössbauer spectra and magnetic properties of two iron(III) spin-crossover complexes Yonezo Maeda, Hiroki Oshio, Koshiro Toriumi and Yoshimasa Takashima, pp 1227 DOI:10.1039/DT9910001227

Iron(III) reduction by D-galacturonic acid. Part 3. Influence of the presence of additional metal ions and of 2-amino-2-deoxy-D-gluconic acid Salvatore Deiana, Carlo Gessa, Paola Piu and Renato Seeber, pp 1237 DOI:10.1039/DT9910001237

Synthetic, spectroscopic and X-ray crystallographic studies on phenylcyanamidocopper(I) complexes Eric W. Ainscough, Edward N. Baker, Mark L. Brader, Andrew M. Brodie, Scott L. Ingham, Joyce M. Waters, John V. Hanna and Peter C. Healy, pp 1243 DOI:10.1039/DT9910001243

Synthesis and characterization of bis(hydrazinium) tetra-(thiocyanato-N)-cobalt(II) and -nickel(II) dihydrates; crystal structure of the cobalt complex N. R. Sreenivasa Kumar, M. Nethaji and Kashinath C. Patil, pp 1251 DOI:10.1039/DT9910001251

Studies on metal complexes of ortho-quinone monooximes. Part 9. Analysis of the charge distribution within the o-quinone monooxime ligands through crystallographic data Oliviero Carugo, Kristina Djinovi, Menico Rizzi and Carla Bisi Castellani, pp 1255 DOI:10.1039/DT9910001255

Mechanism of C-H bond oxidation by a monooxoruthenium(V) complex Chi-Ming Che, Clare Ho and Tai-Chu Lau, pp 1259 DOI:10.1039/DT9910001259

Synthesis and cyclic voltammetry of trinuclear sulphido clusters of nickel(II), palladium(II) and platinum(II) and selenido clusters of nickel(II) with 1,2-bis(diphenylphosphino)ethane, and crystal structures of sulphido and selenido clusters of nickel(II) Keiji Matsumoto, Norihiko Saiga, Shigeki Tanaka and Shun'ichiro Ooi, pp 1265 DOI:10.1039/DT9910001265

Reactions of the anionic phenylphosphinidene cluster [Os3-(µ-H)(µ-PPh)(CO)10]- and its phenylphosphido isomer [Os3-(µ-PHPh)(CO)10]- with electrophiles. Crystal structures of [Os3H(µ-PMePh)(CO)10] and [{Os3H(PPh)(CO)10}2Hg] Antony J. Deeming, Simon Doherty, Michael W. Day, Kenneth I. Hardcastle and Houri Minassian, pp 1273 DOI:10.1039/DT9910001273

Thiolate complexes of osmium(III) and osmium(IV). Crystal structures of [Os(SC6F5)2(O2CPh)(PMe2Ph)2] and [OsCl-(SC6F5)3(PMe2Ph)] Adrian Hills, David L. Hughes, Raymond L. Richards, Maribel Arroyo, Diana Cruz-Garritz and Hugo Torrens, pp 1281 DOI:10.1039/DT9910001281

Formation of spirocyclic imidophosphinato complexes: crystal structures of [V(OPPh2NPPh2O)2O] and [Mo(NPPh2NPPh2O)2Cl2] Mathias Rietzel, Herbert W. Roesky, Kattesh V. Katti, Mathias Noltemeyer, Martyn C. R. Symons and Atieh Abu-Raqabah, pp 1285 DOI:10.1039/DT9910001285

Molecular design of crown ethers. Part 8. Substitution and lariat effect upon cation complexation with 1,4,7,10,13-pentaoxacyclohexadecane (16-crown-5) derivatives in solvent extraction and in homogeneous solution Yoshihisa Inoue, Mikio Ouchi, Kenji Hosoyama, Tadao Hakushi, Yu Liu and Yasuyuki Takeda, pp 1291 DOI:10.1039/DT9910001291

A crystallographic study of a red and a blue complex of copper(II) formed with different geometric isomers of a reinforced macrocycle Gary Pattrick, M. Patrick Ngwenya, Susan M. Dobson and Robert D. Hancock, pp 1295 DOI:10.1039/DT9910001295

Neutral oxo and nitrido complexes of technetium(V) and rhenium(V) with an unsaturated tetradentate (N2S2) ligand. Crystal structure of [N,N-ethylenebis(thioacetylacetonylideneiminato](2-)S,S,N,N) nitridotechnetium(V) Francesco Tisato, Ulderico Mazzi, Guiliano Bandoli, Gerard Cros, Marie-Helene Darbieu, Yvon Coulais and Robert Guiraud, pp 1301 DOI:10.1039/DT9910001301

X-Ray crystal structure of µ-oxo-bis[(1-methylimidazole)-phthalocyaninatoiron(III)] and comments on the molecular structure and chemistry of oxo-bridged iron phthalocyaninate dimers Claudio Ercolani, Fabrizio Monacelli, Sharlene Dzugan, Virgil L. Goedken, Gianna Pennesi and Gentilina Rossi, pp 1309 DOI:10.1039/DT9910001309

Nitrosyl-nitro redox couples with metal phthalocyanines: synthesis and characterization of nitro derivatives of cobalt and iron phthalocyanine, dioxygen activation, oxygen-atom transfer and stoichiometric and catalytic oxidation of terminal olefins Claudio Ercolani, Anna Maria Paoletti, Giovanna Pennesi and Gentilina Rossi, pp 1317 DOI:10.1039/DT9910001317

Synthesis, reactions and catalytic activities of cationic iridium(I) complexes of cycloocta-1,5-diene Chong Shik Chin and Byeongno Lee, pp 1323 DOI:10.1039/DT9910001323

Spectrochemistry of solutions. Part 22. A study of the complexation of zinc(II), cadmium(II) and mercury(II) by cyanide in liquid ammonia by vibrational spectroscopy Dicky D. K. Chingakule, Peter Gans and J. Bernard Gill, pp 1329 DOI:10.1039/DT9910001329

Effects of asymmetry and bulky substituents in amine ligands of cis-Di(amine)dichloroplatinum complexes on the structure of adducts formed with adjacent guanines in nucleic acids Kenji Inagaki, Hideaki Nakahara, Maarten Alink and Jan Reedijk, pp 1337 DOI:10.1039/DT9910001337

Preparation of metal-sulphur-nitrogen complexes via photochemical activation of S4N4 Christopher W. Allen, Paul F. Kelly and J. Derek Woollins, pp 1343 DOI:10.1039/DT9910001343

Synthesis and characterisation of neutral tris(bidentate) vanadium(V) complexes containing N3S23- and catecholate ligands Themistoklis A. Kabanos and J. Derek Woollins, pp 1347 DOI:10.1039/DT9910001347

Reactivity of [Ru3H2(CO)9(µ3-COMe){M(PPh3)}](M = Cu, Ag or Au) and [Ru3H(CO)9(µ3-PPh){Ag(PPh3)}] with PPh3 John Evans and Philip M. Stroud, pp 1351 DOI:10.1039/DT9910001351

Carbaboranerhodium complexes with Rh-Rh, Rh-Cu and Rh-Au bonds; crystal structure of [NEt4][Rh2(µ- : 5-C2B9H8Me2)(CO)3(5-C2B9H9Me2)] Massimino U. Pilotti, Isil Topaloglu and F. Gordon A. Stone, pp 1355 DOI:10.1039/DT9910001355

Alternative synthesis of binuclear gold(II) ylide complexes: cationic gold(II) complexes. X-Ray crystal structures of [{Au(CH2)2PPh2}2Br2] and [{Au(CH2)2PPh2}2(PPh3)2][CLO4]2 Rafael Usón, Antonio Laguna, Mariano Laguna, Josefina Jiménez and Peter G. Jones, pp 1361 DOI:10.1039/DT9910001361

Stability of some metal-ion complexes of tubercidin (= 7-deazaadenosine) in aqueous solution. An o-amino group inhibits complexation at N1 of purines! Liang-nian Ji, Nicolas A. Corfù and Helmut Sigel, pp 1367 DOI:10.1039/DT9910001367

Notes. Substituent effects on enthalpy and entropy for the axial ligation of zinc tetraphenylporphyrinates Gwen S. Marbury, Cynthia Brewer and Greg Brewer, pp 1377 DOI:10.1039/DT9910001377

Preparation and crystal structure of the complexes thallium(I) oxalohydroxamate(1-) and malono-hydroxamate(1-) Sheng-Hua Huang, Ru-Ji Wang and Thomas C. W. Mak, pp 1379 DOI:10.1039/DT9910001379

Additions and corrections Pierre Braunstein, Jean-Luc Richert and Yves Dusausoy, pp 1383 DOI:10.1039/DT9910001383

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX023

Back matter J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BP027

Issue 6

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX025

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP029

A bridge-bond isomerism. X-Ray crystal structure, spectral and magnetic properties of two dinuclear isomeric complexes [Cu(bipyo)Cl2](bipyo = 2,2-bipyridine N,N-dioxide) Peter Baran, Marián Koman, Duan Valigura and Jerzy Mrozinski, pp 1385 DOI:10.1039/DT9910001385

Oxidative-addition reactions of Mel or CH2I2 to [M2(µ-pz)(µ-SBut)(CO)2{P(OMe)3}2](M = Rh or Ir) complexes. X-Ray structure of [Ir2(µ-pz)(µ-SBut)(µ-CH2)I2(CO)2{P(OMe)3}2](pz = pyrazolate) M. Teresa Pinillos, Anabel Elduque, José A. López, Fernando J. Lahoz and Luis A. Oro, pp 1391 DOI:10.1039/DT9910001391

Oxidative-addition reactions of [W2(-C5H4R)2X4](R = Pri or Me; X = Cl or Br): reversible addition of dihydrogen to a tungsten-tungsten triple bond and X-ray crystal structures of [W2(-C5H4Pri)2Cl4(µ-H)(µ-PPh2)] and [W2(-C5H4Pri)2Cl3(µ-Cl)(µ-H)(µ-PPh2)(PMe3)] Qian Feng, Montserrat Ferrer, Malcolm L. H. Green, Philip Mountford, Victor S. B. Mtetwa and Keith Prout, pp 1397 DOI:10.1039/DT9910001397

Synthesis and reactivity of bis(-cyclopentadienyl) trimethyltin derivatives of niobium: crystal and molecular structure of [{Nb(-C5H5)2(SnMe3)}2(µ-O)] Malcolm L. H. Green, Andrew K. Hughes and Philip Mountford, pp 1407 DOI:10.1039/DT9910001407

Synthesis of µ-carbene and µ-carbyne complexes of rhodium and cobalt from substituted diazirines. Crystal structures of [Rh2(5-C5Me5)2(CO)2{µ-C(C6H4F-4)(OMe)}] and [Rh2(5-C5Me5)2(µ-CO)(µ-C6H4Me-4)][BPh4] Anthony G. Avent, Stephen A. Benyunes, Penny A. Chaloner, Nigel G. Gotts and Peter B. Hitchcock, pp 1417 DOI:10.1039/DT9910001417

Reaction of [WMe(CO)3(-C5H5)] with LiBHEt3. Formation and reactions of the anionic formyl trans-[W(CHO)Me(CO)2(-C5H5)]- and the anionic hydrido acyl trans-[WH(COMe)(CO)2(-C5H5)]- J. Trevor Gauntlett, Brian E. Mann, Mark J. Winter and Simon Woodward, pp 1427 DOI:10.1039/DT9910001427

Reaction of [Ti(cp)2(AsF6)2](cp =-C5H5) toward S4N4 and Se4N4: identification in solution of [Ti(cp)2(S4N4)][AsF6]2; synthesis and characterization of [Ti(cp)2F(AsF6)], [Ti(cp)2F2]·AsF3 and [Ti(cp)F3]·AsF3 Petra K. Gowik, Thomas M. Klapötke and Stan Cameron, pp 1433 DOI:10.1039/DT9910001433

Ligand substitution reactions of aquocobalamin. Reactions with primary amines Helder M. Marques, pp 1437 DOI:10.1039/DT9910001437

Dicopper(II) complexes of novel polyfunctional pyridazines: crystal structure and magnetic properties of bis[µ-pyridazine-3,6-dicarbaldehyde dioximato(1-)-N1,N:N2,N]-bis[aqua(perchlorato-O)copper(II)] Francis Abraham, Michel Lagrenee, Stéphane Sueur, Bouchaïb Mernari and Claude Bremard, pp 1443 DOI:10.1039/DT9910001443

Aluminium complexes of N,N-ethylenebis(salicylideneimine)(H2salen). X-Ray crystal structures of [{Al(salen)}2(µ-O)]·MeCN and [Al(OC6H2Me3-2,4,6)(salen)] Patrick L. Gurian, Linda K. Cheatham, Joseph W. Ziller and Andrew R. Barron, pp 1449 DOI:10.1039/DT9910001449

Oxidation of nickel(II) ethylenediaminetetraacetate by carbonate radical Parikshit C. Mandal, Debaki K. Bardhan, Samir Sarkar and Sudhindra N. Bhattacharyya, pp 1457 DOI:10.1039/DT9910001457

Gadolinium(III)in vivo speciation. Part 1. A potentiometric and spectroscopic study of gadolinium(III) citrate complexes Graham E. Jackson and J. du Toit, pp 1463 DOI:10.1039/DT9910001463

Electronic structures and d-d spectra of vanadium(IV) and VO2+ complexes: discrete variational X calculations Robert J. Deeth, pp 1467 DOI:10.1039/DT9910001467

Stability constants and rate coefficients for decarboxylation of lanthanide oxalacetates Cecil B. Monk, pp 1479 DOI:10.1039/DT9910001479

Synthesis and properties of transition-metal complexes of 5,5-bis(N-8-quinolylcarbamoyl)nonane Jean-Claude Chambron and Kazuhisa Hiratani, pp 1483 DOI:10.1039/DT9910001483

Co-ordination chemistry of 1,4,7-triazacyclononane (L) and its N-methylated derivative (L) with silver(I) and mercury(II). The crystal structures of [AgL2]PF6 and [AgL(SCN)] Claudia Stockheim, Karl Wieghardt, Bernhard Nuber, Johannes Weiss, Ulrich Flöurke and Hans-Jürgen Haupt, pp 1487 DOI:10.1039/DT9910001487

Stability of complexes of the macrocycles 1,5,9,13-tetraazacyclohexadecane and 1,4,7,11-tetraazacyclotetradecane with metal ions. Effect of large hole size and of chelate ring sequence Robert C. Luckay and Robert D. Hancock, pp 1491 DOI:10.1039/DT9910001491

Synthesis and structure of mixed chloride-tetrachloroaluminate salts Jaime M. Martell and Michael J. Zaworotko, pp 1495 DOI:10.1039/DT9910001495

Synthesis and characterisation of pentaphenylcyclo-pentadienyliron arene sandwich complex cations [Fe(5-C5Ph5)(arene)]+ and the X-ray crystal structure of the [Fe(5-C5Ph5)(6-C6H5Me)]+ cation Leslie D. Field, Trevor W. Hambley, Peter A. Lay, Charles M. Lindall and Anthony F. Masters, pp 1499 DOI:10.1039/DT9910001499

Synthesis and reactivity of phosphine-substituted hydrido silyl complexes mer-[FeH(SiR3)(CO)3{Ph2P(CH2)nPPh2}](n= 1 or 4), mer-[FeH{Si(OMe)3}(CO)3(PPh2H)] and mer-[FeH{Si(OMe)3}(CO)3{Ph2PCH2C(O)Ph}]. Synthesis of bimetallic complexes and crystal structure of mer-[(Ph3P)Cu(µ-dppm)Fe{Si(OMe)3}(CO)3] Pierre Braunstein, Michael Knorr, Ulrich Schubert, Maurizio Lanfranchi and Antonio Tiripicchio, pp 1507 DOI:10.1039/DT9910001507

Preparation and structure of trichlorotris(dimethylphenylphosphine)tungsten(III), the first structurally characterised neutral mononuclear complex of tungsten(III) Adrian Hills, David L. Hughes, G. Jeffery Leigh and Rafael Prieto-Alcón, pp 1515 DOI:10.1039/DT9910001515

New complexes of rhenium-(V) or -(III) with various diphosphines or bis(diphenylphosphino)methane monoxide: crystal structure of mer-[ReCl3(dppm-PP)(dppom-P)][dppm = Ph2PCH2PPh2, dppom = Ph2PCH2P(O)Ph2] Xavier L. R. Fontaine, Edmund H. Fowles, Timothy P. Layzell, Bernard L. Shaw and Mark Thornton-Pett, pp 1519 DOI:10.1039/DT9910001519

Dihydrogen and hydrido complexes via hydrogen addition to d6 five-co-ordinate complexes of ruthenium and osmium with 1,2-bis(dicyclohexylphosphino)ethane Antonio Mezzetti, Alessandro Del Zotto, Pierluigi Rigo and Erica Farnetti, pp 1525 DOI:10.1039/DT9910001525

Reactions of µ-ethynediyl complexes of transition metals: selective double insertion of isocyanides and molecular structure of [Cl(Et3P)2PdCCC(NPh)C(NPh)Pd(PEt3)2Cl] Kiyotaka Onitsuka, Hiroo Ogawa, Takashi Joh, Shigetoshi Takahashi, Yasuhiro Yamamoto and Hiroshi Yamazaki, pp 1531 DOI:10.1039/DT9910001531

Synthesis, structure and characterization of a novel germanium dioxide with occluded tetramethylammonium hydroxide Jun Cheng, Ruren Xu and Guangdi Yang, pp 1537 DOI:10.1039/DT9910001537

Pearsons chemical hardness, heterolytic dissociative version of Paulings bond-energy equation and a novel approach towards understanding Pearsons hard-soft acid-base principle Dipankar Datta and S. Nabakishwar Singh, pp 1541 DOI:10.1039/DT9910001541

Metal complexes of 1,2-diaminobenzene derivatives. Determination of the oxidation state of the ligands through crystallographic data Oliviero Carugo, Kristina Djinovi, Menico Rizzi and Carla Bisi Castellani, pp 1551 DOI:10.1039/DT9910001551

Synthesis and characterization of 3,6-bis(3,5-dimethylpyrazol-1-yl)pyridazine (L) derivatives of mononuclear manganese(I) and Group 6 metal(0) carbonyl complexes. Crystal and molecular structures of [M(CO)4L](M = Cr or Mo) M. Pilar Gamasa, José Gimeno, Elena Lastra, Santiago García-Granda and Dámaso Moreiras, pp 1557 DOI:10.1039/DT9910001557

Bis(allyl) ruthenium(IV) complexes. Part 1. Synthesis of complexes containing four-membered ruthenium heterocycles. Crystal structure of [Ru(3:3-C10H16)-(SNC7H4S-2)Cl] James G. Toerien and Petrus H. Van Rooyen, pp 1563 DOI:10.1039/DT9910001563

Synthesis and molecular structure of novel zinc(II) complexes: [{Zn(HL)Cl2}n], [Zn2L2Cl2] and [Zn2(µ-OH)LCl2][HL = 4-methyl-2,6-bis(pyrazol-1-ylmethyl)phenol] Chun-Tong Chen, Wen-Kuen Chang, Shiann-Cherng Sheu, Gene-Hsiang Lee, Tong-Ing Ho, Yuan-Chuan Lin and Yu Wang, pp 1569 DOI:10.1039/DT9910001569

Pentamethylcyclopentadienyltitanium-(III) and -(IV) carboxylates. Crystal structures of [Ti(-C5Me5)(O2CPh)3] and [{Ti(-C5Me5)(O2CPh)2}2] Pilar Gómez-Sal, Beatriz Royo, Pascual Royo, Ricardo Serrano, Isabel SáEz and Sagrario Martinez-Carreras, pp 1575 DOI:10.1039/DT9910001575

Metal complexes of benzodiazepines. Part 2. The reaction of 1,4-benzodiazepines with halide-bridged complexes of palladium(II)[Pd2X4(PPrn3)2](X = Cl or l) Matteo Cusumano, Antonino Giannetto, Paola Ficarra, Rita Ficarra and Silvana Tommasini, pp 1581 DOI:10.1039/DT9910001581

Determination of the stability constants of nitritoborate lon by means of an NOx-selective electrode and of boric acid complexes of acetate and phthalate by pH measurement Derek Midgley, pp 1585 DOI:10.1039/DT9910001585

Reactions of co-ordinated ligands. Part 51. The reactions of ,3(5e)-butadienylruthenium complexes [Ru{C(Ph)-3-C(Ph)C(Ph)CR(Ph)}(-C5H5)](R = H or CHO) with P(OMe)3, PhCCPh, H+ and aryldiazonium cations; crystal structure of [Ru{C(O)C(Ph)C(Ph)-2-(Z)C(Ph)CH(Ph)}{P(OMe)3}(-C5H5)] Mark Crocker, Barry J. Dunne, Michael Green and A. Guy Orpen, pp 1589 DOI:10.1039/DT9910001589

Reduction-oxidation properties of organo-transition metal complexes. Part 33. Ligand-vs. metal-based oxidation of cyano-bridged catecholatoruthenium-manganese carbonyl compounds: the X-ray crystal structure of cis-[(dppe)(Et3P)(OC)2Mn(µ-CN)Ru(CO)2(PPh3)(o-O2C6Cl4)]·CH2Cl2 Aristides Christofides, Neil G. Connelly, Holly J. Lawson, Andrew C. Loyns, A. Guy Orpen, Mark O. Simmonds and Gillian H. Worth, pp 1595 DOI:10.1039/DT9910001595

Infrared and resonance Raman spectroscopic characterization of electronically conducting ruthenium(II) co-ordination polymers Joe A. Crayston, Domenica C. Cupertino and Trevor J. Dines, pp 1603 DOI:10.1039/DT9910001603

Reaction of tetraacetatochlorodiruthenium(II,III) with pyridine-2-carboxylic acid. X-Ray crystal structures of tris(pyridine-2-carboxylato-N,O)ruthenium(III) monohydrate and trans-bis(pyridine-2-carboxylato-N,O)bis(triphenylphosphine)ruthenium(II)-methanol(1/2) M. Carmen Barral, Reyes Jiménez-Aparicio, Elia C. Royer, M. José Saucedo, Francisco A. Urbanos, Enrique Gutiérrez-Puebla and Caridad Ruíz-valero, pp 1609 DOI:10.1039/DT9910001609

Covalent alternatives for the elusive iminophosphonium cation. Crystal structures of PCl(NPri2)2NPh·AlCl3 and P(NPri2)2[NPh(SO2CF3)]O Neil Burford, Rupert E. v. H. Spence and John F. Richardson, pp 1615 DOI:10.1039/DT9910001615

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 112. Synthesis of rhenium-rhodium complexes; crystal structure of [ReRh{µ-,5-C2B9H7(CH2C6H4Me-4)Me2}(CO)4(-C5H4Me)] Massimino U. Pilotti, F. Gordon A. Stone and Isil Topalolu, pp 1621 DOI:10.1039/DT9910001621

Notes. Preparation and X-ray crystal structure of the adduct WCl4S·S8 David L. Hughes, Janette D. Lane and Raymond L. Richards, pp 1627 DOI:10.1039/DT9910001627

Crystal structure of [AsPh4]2[{TcN(O2)2}2(ox)]·2Me2CO: an oxalate-bridged technetium(VII) nitridoperoxo dimer John Baldas, Silvano F. Colmanet and Geoffrey A. Williams, pp 1631 DOI:10.1039/DT9910001631

Interaction of CoII, NiII and CuII with active aldehyde derivatives of thiamine Maria Louloudi and Nick Hadjiliadis, pp 1635 DOI:10.1039/DT9910001635

Metal-metal interaction in a binuclear palladium(II) system. The (d* p) transition and the X-ray crystal structure of [Pd2(dppm)2(CN)4][dppm = bis(diphenylphosphino)methane] Hon-Kay Yip, Ting-Fong Lai and Chi-Ming Che, pp 1639 DOI:10.1039/DT9910001639

Reaction of [Mo(CO)6] with Ph2P(CH2)6PPh2(dpph): the synthesis of [Mo(CO)3(dpphn)][dpphn = Ph2P(CH2)2CHCH(CH2)2PPh2] and trans-[Mo2(CO)8(µ-dpph)2] and the crystal structure of the latter Chuen-Her Ueng and Gwo-Yuh Hwang, pp 1643 DOI:10.1039/DT9910001643

Synthesis and structural analysis of the new layered compound [FeWO4Cl] Jin-Ho Choy, Dong-Youn Noh, Hyung-Ho Park and Jeong-Chul Park, pp 1647 DOI:10.1039/DT9910001647

Letters George S. Perry and Robert F. Watson, pp 1649 DOI:10.1039/DT9910001649

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX027

Issue 7

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX029

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP033

A thermodynamic and spectroscopic study of the complexes of the undecapeptide Substance P, of its N-terminal fragment and of model pentapeptides containing two prolyl residues with copper ions Leslie D. Pettit, Wojciech Bal, Michel Bataille, Claude Cardon, Henryk Kozlowski, Marie Leseine-Delstanche, Simon Pyburn and Andrea Scozzafava, pp 1651 DOI:10.1039/DT9910001651

Template synthesis, structure and characterization of NiII2PbII and CuII2PbII complexes of macrocycles with a N4O2 donor set Makoto Tadokoro, Hisashi kawa, Naohide Matsumoto, Masayuki Koikawa and Sigeo Kida, pp 1657 DOI:10.1039/DT9910001657

Metal-ion selectivity by macrocyclic ligands. Part 2. The interaction of ZnII, CdII and HgII with pyridinyl-derived N3O2 macrocycles; X-Ray structures of one zinc and two cadmium endomacrocyclic complexes and of one zinc and one mercury exomacrocyclic complex Harry Adams, Neil A. Bailey, David E. Fenton, Ian G. Ford, Simon J. Kitchen, Mark G. Williams, Peter A. Tasker, Anthony J. Leong and Leonard F. Lindoy, pp 1665 DOI:10.1039/DT9910001665

Molecular helicity in inorganic complexes; bi- and tri-nuclear complexes of 2,2:6,2:6,2:6,2:6,2-sexipyridine and the crystal and molecular structure of bis(µ-2,2:6,2:6,2:6,2:6,2-sexipyridine-3N,N,N:3N,N,N) dicadmium hexafluorophosphate-acetonitrile (1/4) Edwin C. Constable, Michael D. Ward and Derek A. Tocher, pp 1675 DOI:10.1039/DT9910001675

Thermodynamic and kinetic studies on the complexation reactions of aqua(rac-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane) copper (II)(blue) with neutral monodentate ligands Chi-Chang Chang and Chung-Sun Chung, pp 1685 DOI:10.1039/DT9910001685

Multi redox-active macrocyclic host molecules containing multiple benzo crown ether and ferrocenyl moieties that bind bipyridinium dications: syntheses, co-ordination and electrochemical properties Paul D. Beer, E. Louise Tite and Arthur Ibbotson, pp 1691 DOI:10.1039/DT9910001691

Preparation and characterisation of anionic bis(cyclopentadienyl)niobium complexes: molecular structure of [K(18-crown-6)][Nb(-C5H5)2(SnMe3)2] Malcolm L. H. Green, Andrew K. Hughes and Philip Mountford, pp 1699 DOI:10.1039/DT9910001699

Synthesis, structure and reactivity of new low-valent mono(-arene)niobium compounds Malcolm L. H. Green, Dermot O'Hare, Philip Mountford and John G. Watkin, pp 1705 DOI:10.1039/DT9910001705

Crystal structure of an infinite stair-type chain compound [{Cu2(tc)2(ClO4)2}n](tc = thiochrome) Susumu Kitagawa, Shinji Matsuyama, Megumu Munakata, Nobuo Osawa and Hideki Masuda, pp 1717 DOI:10.1039/DT9910001717

Relationship between the electronic and molecular structure of tervalent aqua ions: low-temperature neutron diffraction structure of CsCr(SO4)2·12H2O Stephen P. Best and J. Bruce Forsyth, pp 1721 DOI:10.1039/DT9910001721

Complexation of tungsten(VI) with citrate Johannes J. Cruywagen, Leon Krüger and Elisabeth A. Rohwer, pp 1727 DOI:10.1039/DT9910001727

Transition metal complexes with sulphur ligands. Part 67. A novel type of reaction: nucleophilic alkylation of thiolato ligands by carbanions via intramolecular electron transfer. Alkylation and reduction of [W(S2C6H4)3] by lithium alkyls Dieter Sellmann, Wolfgang Kern and Matthias Moll, pp 1733 DOI:10.1039/DT9910001733

Reaction of nitrogen and sulphur donor ligands with the antitumour complex [{CuL(MeCo2)}2](HL = 2-formylpyridine thiosemicarbazone) and the single-crystal X-Ray structure of [CuL(bipy)]ClO4(bipy = 2,2-bipyridyl) Eric W. Ainscough, Andrew M. Brodie, John D. Ranford and Joyce M. Waters, pp 1737 DOI:10.1039/DT9910001737

Partial molar volumes for tetracyano(diimine)ferrate(II) anions in aqueous solution Nicholas J. Blundell, John Burgess, Pilar Guardado and Colin D. Hubbard, pp 1743 DOI:10.1039/DT9910001743

Solute-solute-solvent interactions in Cu(O2CR)2-pyridine-diluent systems; the influence of the carboxylate ligand Irmina Uruska, pp 1747 DOI:10.1039/DT9910001747

Metal-sulphur bond enthalpy determination of di-n-butyldithiocarbamate chelates of zinc, cadmium and mercury Antonio G. de Souza, José H. de Souza and Claudio Airoldi, pp 1751 DOI:10.1039/DT9910001751

Studies on [VCl3(OPMe2Ph)(PMe2Ph)2]. Part 1. Synthesis, structure and reactivity of trans,mer-[VCl3(OPMe2Ph)(PMe2Ph)2], including the X-Ray crystal structure of mer-[VCl3(OPMe2Ph)(Et2PCH2CH2PEt2)] Richard A. Henderson, Adrian Hills, David L. Hughes and David J. Lowe, pp 1755 DOI:10.1039/DT9910001755

Studies on [VCl3(OPMe2Ph)(PMe2Ph)2]. Part 2. Kinetic and mechanistic studies on the reaction of trans,mer-[VCl3(OPMe2Ph)(PMe2Ph)2] with 2,2-bipyridine or Et2PCH2CH2PEt2 at 25 °C Richard A. Henderson, pp 1761 DOI:10.1039/DT9910001761

Co-ordination, isomerisation and disruption of the ligands Ph2PO2C(CH2)nCHCH2(n= 0 or 1). X-Ray crystal and molecular structure of chloro(tetraphenyldiphosphoxane-2P,P)(triphenylphosphine)rhodium(I)-tetrahydrofuran (1/1) Derek J. Irvine, Christopher Glidewell, David J. Cole-Hamilton, John C. Barnes and Alan Howie, pp 1765 DOI:10.1039/DT9910001765

Structural, spectral and magnetic investigations of various types of compounds and their isomers isolated from the system copper(II)-C(CN)3--pyrazole Jozef Koíek, Mária Hvastijová, Jií Kohout, Jerzy Mroziski and (the late) Helmut Köhler, pp 1773 DOI:10.1039/DT9910001773

Spectroscopic and magnetic properties of two ferromagnetically coupled nickel(II) dimers [{Ni(terpy)(NCX)2}2](terpy = 2,2 :6,2-terpyridine, X = S or Se). Crystal structure of the thiocyanate Teofilo Rojo, Roberto Cortés, Luis Lezama, M. Isabel Arriortua, Karmele Urtiaga and Geràrd Villeneuve, pp 1779 DOI:10.1039/DT9910001779

Mössbauer spectra of some low-spin iron(II) complexes with ditertiary phosphines David J. Evans, M. Jimenez-Tenorio and G. Jeffery Leigh, pp 1785 DOI:10.1039/DT9910001785

The role of transition metal atoms as hydrogen bond acceptors: a neutron diffraction study of [NPrn4]2[PtCl4]·cis-[PtCl2(NH2Me)2] at 20 K Lee Brammer, John M. Charnock, Peter L. Goggin, Robin J. Goodfellow, A. Guy Orpen and Thomas F. Koetzle, pp 1789 DOI:10.1039/DT9910001789

Aqueous molybdovanadates at high Mo: V ratio Oliver W. Howarth, Lage Pettersson and Ingegärd Andersson, pp 1799 DOI:10.1039/DT9910001799

Monohydride complexes of molybdenum(IV) and tungsten(IV) containing bulky thiolate ligands: X-ray crystal structures of [MH(SC6H2PrI3-2,4,6)3(PMe2Ph)2], M = Mo or W Timothy E. Burrow, Adrian Hills, David L. Hughes, Janette D. Lane, Robert H. Morris and Raymond L. Richards, pp 1813 DOI:10.1039/DT9910001813

Structures and reactivity of binuclear nickel(II) complexes of 5,5-bis(4-amino-2-azabutyl)-3,7-diazanonane-1,9-diamine Alexander McAuley, Kathy Beveridge, S. Subramanian and Todd W. Whitcombe, pp 1821 DOI:10.1039/DT9910001821

Formation of supramolecules in solution. Interaction between transition-metal complexes and water-soluble porphyrins Rosario A. Vilaplana, Francisco González-Vílchez and Robert F. Pasternack, pp 1831 DOI:10.1039/DT9910001831

Syntheses of some hydrotris(3,5-dimethylpyrazol-1-yl)-borato(aryloxo)zirconium(IV) complexes and the X-Ray crystal structures of [ZrL(OC6H4NO2-4)3], [ZrL(OC6H3Me2-2,6)3] and [ZrL(Cl)(OC6H3Me2-2,6)2](L = 3,5-Me2C3N2H) Roman A. Kresinski, Lloyd Isam, Thomas A. Hamor, Christopher J. Jones and Jon A. McCleverty, pp 1835 DOI:10.1039/DT9910001835

Base-catalysed hydrolysis of cis-(imidazolato)-, cis-(benzimidazolato)- and cis-(N-methylimidazole)-bis-(ethylenediamine)halogenocobalt(III) cations. A comparison of the reactivities of the deprotonated imidazole and benzimidazole complexes Anadi C. Dash, Neelamadhab Dash and Jyotsnamayee Pradhan, pp 1843 DOI:10.1039/DT9910001843

Notes. Electronic effects of co-ordinated methoxide on the rates of entry of imidazole derivatives into [dimethyl-3,7,12,17-tetramethyl-8,13-divinylporphyrin-2,18-dipropanoato(2-)](methanol)methoxocobalt(III) in methanol Smiljko Aperger, Gordana Vrban, Biserka Cetina-imek and Mato Orhanovi, pp 1847 DOI:10.1039/DT9910001847

Allylic alkylation of co-ordinated cyanide; the synthesis and X-Ray crystal structure of trans-[Mn(CO)(CNCH2CMe = CH2)(dppm)2][PF6]·thf (dppm = Ph2PCH2PPh2, thf = tetrahydrofuran) Neil G. Connelly, A. Guy Orpen, Georgina M. Rosair and Gillian H. Worth, pp 1851 DOI:10.1039/DT9910001851

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX031

Issue 8

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX033

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP037

Some reactions of tetrakis(tert-butylimido)osmium(VIII). X-Ray crystal structures of Os(NBut)O(O2CBut)2(NH2But)2·ButCO2H, (ButN)2 Os(µ-NBut)2Os(µ-NBut)X2(X = Cl or I) and [Os2(NBut)4(µ-NBut)2]I3 Andreas A. Danopoulos, Geoffrey Wilkinson, Bilquis Hussain-Bates and Michael B. Hursthouse, pp 1855 DOI:10.1039/DT9910001855

Reactivity of ruthenium and niobium trihydrides with gold fragments. Crystal structure of the hexanuclear raft cluster [Au3Nb3(µ-H)6(-C5H4SiMe3)6] Antonio Antiñolo, Félix A. Jalón, Antonio Otero, Mariano Fajardo, Bruno Chaudret, Fernando Lahoz and José A. López, pp 1861 DOI:10.1039/DT9910001861

Synthesis and characterization of platinum complexes with acyclovir and some acetylated derivatives: crystal and molecular structure of trans-[9-(2-acetoxyethoxymethyl)guanine-N7]dichloro(-ethylene)platinum(II) Lucia Cavallo, Renzo Cini, Joze Kobe, Luigi G. Marzilli and Giovanni Natile, pp 1867 DOI:10.1039/DT9910001867

New modes of attachment of C5 rings in organometallic compounds: X-ray crystal structures of the clusters [Os3H(Ph3PC5H3)(CO)x](x= 9 or 10) derived from cyclopentadienylidenetriphenylphosphorane Antony J. Deeming, Nicholas I. Powell and Caroline Whittaker, pp 1875 DOI:10.1039/DT9910001875

Preparation of a bis(cyclopentadienyl)acetylene-framed heterobimetallic complex and its reaction with dicobalt octacarbonyl Claudio Lo Sterzo and Gabriele Bocelli, pp 1881 DOI:10.1039/DT9910001881

Comparative study of the optical and magnetic circular dichroism spectra of bis-thioether and -imidazole complexes of iron(III) tetraphenyl- and octaethyl-porphyrin. Models of haem co-ordination in bacterioferritins John McKnight, Myles R. Cheesman, Christopher A. Reed, Robert D. Orosz and Andrew J. Thomson, pp 1887 DOI:10.1039/DT9910001887

Local density discrete variational X calculations on transition-metal oxycation complexes: d-d and charge-transfer spectra of molybdenyl species Robert J. Deeth, pp 1895 DOI:10.1039/DT9910001895

Tuning the reactivities of ruthenium-oxo complexes with robust ligands. A ruthenium(IV)-oxo complex of 6,6-dichloro-2,2-bipyridine as an active oxidant for stoichiometric and catalytic organic oxidation Chi-Ming Che, Clare Ho and Tai-Chu Lau, pp 1901 DOI:10.1039/DT9910001901

Synthesis, electrochemistry and X-ray crystal structure of cis-[RuIIIL1(Cl)(H2O)][ClO4]2·2H2O [L1=N,N-dimethyl-N,N-bis(2-pyridylmethyl)ethylenediamine]; electrochemical oxidation of alcohols and tetrahydrofuran by cis-[RuVL1(Cl)O]2+ Chi-Keung Li, Wai-Tong Tang, Chi-Ming Che, Kwok-Yin Wong, Ru-Ji Wang and Thomas C. W. Mak, pp 1909 DOI:10.1039/DT9910001909

Cobalt(III) alkyl complexes of 1,2-bis(2-pyridinecarboxamido)benzene (H2bpb) and 4,5-dichloro-1,2-bis(2-pyridinecarboxamido)benzene (H2bpc) and X-ray crystal structures of [Co(bpc)(CH2CH2CMeCH2)(H2O)] and [Co(bpb)Et(H2O)] Shing-Tat Mak, Wing-Tak Wong, Vivian Wing-Wah Yam, Ting-Fong Lai and Chi-Ming Che, pp 1915 DOI:10.1039/DT9910001915

Catalytic reduction of nitrous oxide by carbon monoxide in the presence of rhodium carbonyl and hydroxide. Evidence for an electron-transfer and an oxygen-transfer mechanism June-Der Lee, Woei-Ping Fang, Chen-Shun Li and Chien-Hong Cheng, pp 1923 DOI:10.1039/DT9910001923

Hydrogenation of acrylic acids catalysed by complexes of rhodium(I) containing mixed anhydrides of acrylic and diphenylphosphinous acids Ahmed Iraqi, Neil R. Fairfax, Sheila A. Preston, Domenico C. Cupertino, Derek J. Irvine and David J. Cole-Hamilton, pp 1929 DOI:10.1039/DT9910001929

Complex formation between oxalate and (2,2:6,2-terpyridyl)copper(II) in dimethyl sulphoxide solution. Synthesis and crystal structures of mono- and di-nuclear complexes Isabel Castro, Juan Faus, Miguel Julve and Alain Gleizes, pp 1937 DOI:10.1039/DT9910001937

A solution study of the protonation and deprotonation equilibria of 5,10,15,20-tetra(p-sulphonatophenyl)porphyrin. Stability constants of its magnesium(II), copper(II) and zinc(II) complexes Hermas R. Jiménez, Miguel Julve and Juan Faus, pp 1945 DOI:10.1039/DT9910001945

Thiosemicarbazones as co-ordinating agents. Part 4. Synthesis, spectroscopic characterization and X-ray structure of two cobalt(III) complexes with pyridoxal thiosemicarbazone Marisa Belicchi Feerrari, Giovanna Gasparri Fava, Maurizio Lanfranchi, Corrado Pelizzi and Pieralberto Tarasconi, pp 1951 DOI:10.1039/DT9910001951

Nitrosyl-nitrite interconversion in pentacyanoruthenate(II) complexes Alberto A. Chevalier, Luis A. Gentil and Jose A. Olabe, pp 1959 DOI:10.1039/DT9910001959

Mechanistic implications of kinetic data for the acid-catalysed dissociation of a tetraazamacrocyclic ligand complex of nickel(II) Chi-Chang Chang and Chung-Sun Chung, pp 1965 DOI:10.1039/DT9910001965

Silver(I) ion-selective electrodes based on polythiamacrocycles Jaume Casabó, Lourdes Mestres, Lluis Escriche, Francesc Teixidor and Consuelo Pérez-Jiménez, pp 1969 DOI:10.1039/DT9910001969

Electrochemical and X-ray crystallographic studies on three macrocyclic dicopper(I) complexes Paul C. Yates, Michael G. B. Drew, Jadwiga Trocha-Grimshaw, Kieran P. McKillop, S. Martin Nelson, Peter T. Ndifon, Charles A. McAuliffe and Jane Nelson, pp 1973 DOI:10.1039/DT9910001973

Structural, spectroscopic and angular-overlap studies of the nature of metal-ligand bonding for tripod ligands Timothy Astley, Allan J. Canty, Michael A. Hitchman, Graham L. Rowbottom, Brian W. Skelton and Allan H. White, pp 1981 DOI:10.1039/DT9910001981

Synthesis and multispectroscopic characterization of organically modified polyoxometalates Patrick Judeinstein, Claude Deprun and Louis Nadjo, pp 1991 DOI:10.1039/DT9910001991

New compounds in the chemistry of Group 4 transition-metal alkoxides. Part 4. Synthesis and molecular structures of two polymorphs of [Ti16O16(OEt)32] and refinement of the structure of [Ti7O4(OEt)20] Raimund Schmid, Alain Mosset and Jean Galy, pp 1999 DOI:10.1039/DT9910001999

The first observation of -octamolybdate: synthesis, crystal and molecular structure of [Me3N(CH2)6NMe3]2[Mo8O26]·2H2O Margaret L. Niven, Johannes J. Cruywagen and J. Bernard B. Heyns, pp 2007 DOI:10.1039/DT9910002007

Synthesis and characterisation of neutral and cationic 2,7-dimethyloctadienediylruthenium(IV) complexes. X-Ray crystal structure of cis-bis(acetonitrile)chloro[(1,2,3,6,7,8-)-2,7-dimethylocta-2,6-diene-1,8-diyl]ruthenium(IV) tetrafluoroborate David N. Cox, R. W. H. Small and Raymond Roulet, pp 2013 DOI:10.1039/DT9910002013

Binuclear complexes of ruthenium with diphosphines and bridging benzene-1,2-diamide. X-Ray crystal structure of [Ru2{µ-1,2-(NH)2C6H4}{µ-(Ph2P)2CH2}(CO)2(PPh3)2]·C6H5Me Adela Anillo, Ricardo Obeso-Rosete, Maria Angela Pellinghelli and Antonio Tiripicchio, pp 2019 DOI:10.1039/DT9910002019

Synthesis of triruthenium-rhodium tetranuclear clusters derived from [Ru3H3(CO)9(µ3-COMe)]. Crystal structure of [N(PPh3)2][Ru3RhH2(CO)11(PPh3)]·0.6C5H12 John Evans, Philip M. Stroud and Michael Webster, pp 2027 DOI:10.1039/DT9910002027

Nickel-(II), -(III) and -(IV) complexes of 1,2-bis(dimethylarsino)tetrafluorobenzene and X-ray crystallographic and extended X-ray absorption fine structure studies of nickel-(III) and -(IV) bromo complexes Lyall R. Hanton, John Evans, William Levason, Richard J. Perry and Michael Webster, pp 2039 DOI:10.1039/DT9910002039

Chromium(II) complexes of o-phenylenediamine. The crystal and molecular structures of bis(o-phenylenediamine-N)-bis(thiocyanato-N)chromium(II) and bis(o-phenylenediamine-2N,N) bis(o-phenylenediamine-N)chromium(II) trifluoromethanesulphonate Jayne Jubb, Leslie F. Larkworthy, Lee F. Oliver, David C. Povey and Gallienus W. Smith, pp 2045 DOI:10.1039/DT9910002045

tert-Butylimido complexes of chromium and vanadium. X-Ray crystal structures of Cr(NBut)Cl3(MeOCH2CH2OMe), Cr[C6H4(NH)2-o]Cl2(PMe2Ph)2, Cr(NBut)2(OSiPh3)2, Cr(NBut)-Cl(OC9H6N)2 and [(PPh3)2][Cr(NBut){S2C2(CN)2}2] Wa-Hung Leung, Andreas A. Danopoulos, Geoffrey Wilkinson, Bilquis Hussain-Bates and Michael B. Hursthouse, pp 2051 DOI:10.1039/DT9910002051

Nuclear and electronic contributions to the photoreactivity of iso- and hetero-polyoxomolybdates Bela Kraut and Guillermo Ferraudi, pp 2063 DOI:10.1039/DT9910002063

Combination of vinyl, phenyl and carbonyl ligands in ruthenium(II) complexes: a route to vinyl ketones Barbara Chamberlain and Roger J. Mawby, pp 2067 DOI:10.1039/DT9910002067

Nuclear magnetic resonance and crystallographic studies of chiral 3-allyl palladium(II) complexes and asymmetric allylic alkylation of propen-2-yl acetates Edoardo Cesarotti, Maria Grassi, Laura Prati and Francesco Demartin, pp 2073 DOI:10.1039/DT9910002073

Models for enzyme-copper-nucleic acid interaction: interaction of some copper complexes derived from salicylaldehyde, glycine and -alanine with cytosine, cytidine and deoxycytidine Indira Samasundaram, Mothilal K. Kommiya and Mallayan Palaniandavar, pp 2083 DOI:10.1039/DT9910002083

Octaethylporphyrinate haem complexes encapsulated inside aqueous detergent micelles: a spectroscopic study Shyamalava Mazumdar, pp 2091 DOI:10.1039/DT9910002091

Oxidation of cobalt(II) tetrapyrroles in the presence of an electron acceptor Damodar Reddy, Nareddi S. Reddy, Tavarekere K. Chandrashekar and Hans van Willigen, pp 2097 DOI:10.1039/DT9910002097

Dimerization effects on spectroscopic properties of water-soluble porphyrins in aqueous and micellar media Mangalampalli Ravikant, Damodar Reddy and Tavarekere K. Chandrashekar, pp 2103 DOI:10.1039/DT9910002103

Synthesis, spectroscopic and X-ray structural characterization of ternary complexes of copper(II) and 2,5-dimethoxycinnamic acid with phenanthrolines Luigi Pietro Battaglia, Anna Bonamartini Corradi, Maria Antonietta Zoroddu, Gavina Manca, Riccardo Basosi and Costantino Solinas, pp 2109 DOI:10.1039/DT9910002109

Construction of a new versatile hydrazonic ligand and its chemical and structural behaviour towards metal ions Sandra Ianelli, Giovannina Minardi, Corrado Pelizzi, Giancarlo Pelizzi, Lucia Reverberi, Constantino Solinas and Pieralberto Tarasconi, pp 2113 DOI:10.1039/DT9910002113

Synthesis, crystal structure and chemical reactivity of dichloro(thiosemicarbazide)copper(II) D. Chattopadhyay, S. K. Majumdar, P. Lowe, C. H. Schwalbe, S. K. Chattopadhyay and S. Ghosh, pp 2121 DOI:10.1039/DT9910002121

Preparation and characterization of complexes of the antitumour copper(II) 2-formylpyridine thiosemicarbazone (HL) system and the single-crystal X-ray structures of [{Cu(HL)(CF3CO2)}2][CF3CO2]2 and [Cu(HL)(H2O)(CLO4)2]·2H2O Eric W. Ainscough, Andrew M. Brodie, John D. Ranford and Joyce M. Waters, pp 2125 DOI:10.1039/DT9910002125

Synthesis, molecular structure, and magnetic properties of [CuLNi(H2O)2LCu][ClO4]2·4H2O [H2L =N,N-bis(3-amino-2,2-dimethylpropyl)oxamide] and its trinickel homologue Antonio C. Fabretti, Aleardo Giusti, Vincenzo G. Albano, Carlo Castellari, Dante Gatteschi and Roberta Sessoli, pp 2133 DOI:10.1039/DT9910002133

Crystallographic identification of a stepped-cubane structure for the Cu4O4 core in [Cu4L2(bipy)4(µ3-OH)2][ClO4]4(HL = 5-hydroxy-6-methylpyridine-3,4-dimethanol, bipy = 2,2-bipyridine) Irimpan I. Mathews and Hattikudur Manohar, pp 2139 DOI:10.1039/DT9910002139

From compounds to materials: heterodinuclear complexes as precursors in the synthesis of mixed oxides; crystal structures of [Cu(H2LA)] and [{CuY(LA)(NO3)(dmso)}2]·2dmso [H4LA=N,N-ethylenebis(3-hydroxysalicylideneimine), dmso = dimethyl sulphoxide] Umberto Casellato, Paolo Guerriero, Sergio Tamburini, Sergio Sitran and Pietro Alessandro Vigato, pp 2145 DOI:10.1039/DT9910002145

Lanthanide ions as calcium substitutes: a structural comparison of europium and calcium complexes of a ditopic calixarene Jack M. Harrowfield, Mark I. Ogden, William R. Richmond and Allan H. White, pp 2153 DOI:10.1039/DT9910002153

Preparation of tetranuclear heterometallic clusters by condensation of tungsten acetylides [W(CO)3(CCR)(-C5H5)] with acetylide clusters [WRu2(CO)8(CCR)L](L =-C5H5 or -C5Me5, R = Ph or C6H4F-p). Crystal structures of [W2Ru2(CO)9{CC(C6H4F-p)}(-C5H5)2] and [W2Ru2(CO)6(CCPh)2(-C5H5)(-C5Me5)] Der-Kweng Hwang, Po-Jin Lin, Yun Chi, Shie-Ming Peng and Gene-Hsiang Lee, pp 2161 DOI:10.1039/DT9910002161

Chemistry of molybdenum. Part 7. Reactivity of terminal oxo-ligands in cis-[MoO2(acda)2](Hacda = 2-aminocyclopent-1-ene-1-carbodithioic acid) toward proton- and electron-donor reagents. Synthesis, redox chemistry and spectroscopic characterisation of neutral seven-co-ordinate catecholato and aryldiazenido compounds of molybdenum Sujit Baran Kumar and Muktimoy Chaudhury, pp 2169 DOI:10.1039/DT9910002169

Competition between triborane as a ligand and a hydride donor at platinum centres containing chelating phosphines: molecular structures of [{Ph2P(CH2)2PPh2}PtB3H7], [{Ph2P(CH2)4PPh2}PtB3H7] and [Pt2H3{(Ph2PC5H4)2Fe}2]Cl Brian S. Haggerty, Catherine E. Housecroft, Arnold L. Rheingold and Bilal A. M. Shaykh, pp 2175 DOI:10.1039/DT9910002175

Transition metal-hydrogen-alkali metal bonds: synthesis and crystal structures of [K(18-crown-6)][W(PMe3)3H5], [Na(15-crown-5)][W(PMe3)3H5] and [{W(PMe3)3H5Li}4] and related studies Adam Berry, Malcolm L. H. Green, Judith A. Bandy and Keith Prout, pp 2185 DOI:10.1039/DT9910002185

Polymerisation of ethylene and propene using new chiral zirconium derivatives. Crystal structure of [ZrL1Cl2][H2L1=(4S,5S)-trans-4,5-bis(1H-inden-1-ylmethyl)-2,2-dimethyl-1,3-dioxolane] Judith A. Bandy, Malcolm L. H. Green, Ian M. Gardiner and Keith Prout, pp 2207 DOI:10.1039/DT9910002207

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX035

Back matter J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BP041

Issue 9

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX037

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP043

Synthesis and X-ray crystal structure of the dimolybdenum acetaldehyde complex [Mo2(-MeCHO)(CO)4(-C5H5)2] Harry Adams, Neil A. Bailey, J. Trevor Gauntlett, Mark J. Winter and Simon Woodward, pp 2217 DOI:10.1039/DT9910002217

Multiple carbon-carbon bond cleavage on a heptaosmium cluster: synthesis and structural characterisation of [Os7(CO)18(µ3-CPh)2] and [Os7(CO)15(µ3-CPh)4] Dario Braga, Fabrizia Grepioni, Brian F. G. Johnson, Jack Lewis and J. Lunniss, pp 2223 DOI:10.1039/DT9910002223

Synthetic and structural studies on Group 13 complexes containing the M(CO)3(-C5H5) fragment (M = Cr or Mo). Part 1. Complexes [E{M(CO)3(-C5H5)}3](E = In or TI) Lucy M. Clarkson, William Clegg, David C. R. Hockless, Nicholas C. Norman and Todd B. Marder, pp 2229 DOI:10.1039/DT9910002229

Synthetic and structural studies on Group 13 complexes containing the M(CO)3(-C5H5) fragment (M = Cr or Mo). Part 2. Complexes [InClx{M(CO)3(-C5H5)}2]n-(x= 1, n= o; x= 2, n= 1) Lucy M. Clarkson, William Clegg, David C. R. Hockless, Nicholas C. Norman, Louis J. Farrugia, Simon G. Bott and Jerry L. Atwood, pp 2241 DOI:10.1039/DT9910002241

Neutral and anionic binuclear perhalogenophenyl platinum-silver complexes with PtAg bonds unsupported by covalent bridges. Molecular structures of [(tht)(C6Cl5)(C6F5)2-PtAg(PPh3)], [NBu4][(C6F5)4PtAg(tht)] and [NBu4][cis-(C6Cl5)2(C6F5)2PtAg(tht)](tht = tetrahydrothiophene) Rafael Usón, Juan Forniés, Milagros Tomás, Irene Ara, José M Casas and Antonio Martín, pp 2253 DOI:10.1039/DT9910002253

Preferential solvation of silver(I), copper(I) and copper(II) ions in aqueous acetonitrile Yizhak Marcus, pp 2265 DOI:10.1039/DT9910002265

Crystallographic and copper-63,65 nuclear quadrupole resonance study of two-co-ordinated copper(I) cations with hindered substituted pyridine ligands Augustin Habiyakare, Edwin A. C. Lucken and Gérald Bernardinelli, pp 2269 DOI:10.1039/DT9910002269

Complexes of aminophosphonates. Part 7. Copper(II) complexes of some aliphatic, alicyclic and aromatic aminophosphonous and aminophosphinic acids Tamas Kiss, Malgorzata Jezowska-Bojczuk, Henryk Kozlowski, Pawel Kafarski and Kazimierz Antczak, pp 2275 DOI:10.1039/DT9910002275

Specific interactions of the -carboxylate group of the aspartic acid residue in oligopeptides containing one, two or three such residues with copper(II) ions. A potentiometric and spectroscopic study Jean-Francois Galey, (the late) Brigitte Decock-Le Reverend, Ahmed Lebkiri, Leslie D. Pettit, Symon I. Pyburn and Henryk Kozlowski, pp 2281 DOI:10.1039/DT9910002281

Synthesis, spectral and structural studies on metal complexes of Schiff bases involving vitamin B6 and histamine Irimpan I. Mathews and Hattikudur Manohar, pp 2289 DOI:10.1039/DT9910002289

Transition metal complexes with thiosemicarbazide-based ligands. Part 13. Synthesis and structure of µ-oxo-bis-{[pentane-2,4-dione bis(S-methylisothiosemicarbazonato-2N,N)(3-)]iron (IV)} Vukadin M. Leovac, Rajna Herak, Bogdan Prelesnik and Svetozar R. Niketic, pp 2295 DOI:10.1039/DT9910002295

Copper(II) complexes of hydrolysis products of the anticancer bis(3,5-dioxopiperazin-1-yl)alkanes. Displacement of co-ordinated carboxylate ligands by deprotonated amide groups in basic solution Niamh Nic Daeid, Kevin B. Nolan and Leo P. Ryan, pp 2301 DOI:10.1039/DT9910002301

Kinetics and mechanism of the oxidation of dodecatungsto-cobaltate(II) by peroxodisulphate and periodate in aqueous acidic solution Mahammad Ali, Swapan K. Saha and Pradyot Banerjee, pp 2305 DOI:10.1039/DT9910002305

Kinetics and mechanism of the multi-step oxidation of ethylenediaminetetraacetate by [Ag(OH)4]- in alkaline media Yunfu Sun, Louis J. Kirschenbaum and Issifou Kouadio, pp 2311 DOI:10.1039/DT9910002311

Sterically hindered chalcogenolato complexes. Mono- and di-meric thiolates and selenolates of zinc and cadmium; structure of [{Cd(SeC6H2But3-2,4,6)2}2], the first three-co-ordinate cadmium-selenium complex Manfred Bochmann, Kevin J. Webb, Michael B. Hursthouse and Muhammed Mazid, pp 2317 DOI:10.1039/DT9910002317

Sterically hindered thiolato, selenolato and tellurolato complexes of mercury(II) Manfred Bochmann and Kevin J. Webb, pp 2325 DOI:10.1039/DT9910002325

Synthesis, crystal and molecular structure and magnetic properties of [Ni3(L1)4(NCS)4(OH)2(OH2)2](L1= 2,5-diamino-1,3,4-thiadiazole) Antonio C. Fabretti, Wanda Malavasi, Dante Gatteschi and Roberta Sessoli, pp 2331 DOI:10.1039/DT9910002331

Different bonding modes in octahedral complexes of 6-(2-thienyl)-2,2-bipyridine (HL) with transition metal ions: crystal structures of [Ru(HL)(py)Cl3](py = pyridine) and [Ru(HL)2Cl][BF4]·CH2Cl2 Edwin C. Constable, Roland P. G. Henney and Derek A. Tocher, pp 2335 DOI:10.1039/DT9910002335

Synthesis of phosphido-bridged ruthenium-manganese complexes; X-ray crystal structures of [RuMn(µ-H)(µ-PPh2)(5-C5H5)(CO)5], [Ru2(µ-H)(µ-PPh2)(5-C5H5)2(CO)2] and [RuMn2(µ-H)(µ-PPh2)2(5-C5H5)(CO)9] Andrew J. M. Caffyn, Martin J. Mays and Paul R. Raithby, pp 2349 DOI:10.1039/DT9910002349

Iridium-nickel mixed-metal carbonyl clusters. Part 2. Synthesis and chemical behaviour of [IrNi8(CO)18]3-. Crystal and molecular structure of [NBu4]3[IrNi8(CO)18] Alessandro Ceriotti, Roberto Della Pergola, Luigi Garlaschelli, Mario Manassero, Norberto Masciocchi and Mirella Sansoni, pp 2357 DOI:10.1039/DT9910002357

Theoretical aspects of photochemical substitution of [Mn(CO)5Cl] and related complexes Kristin Pierloot, Patrick Hoet and Luc G. Vanquickenborne, pp 2363 DOI:10.1039/DT9910002363

The electronic structure of trifluorophosphine studied by photoelectron spectroscopy with variable photon energy Jennifer C. Green, Nikolas Kaltsoyannis, Kong Hung Sze and Michael A. MacDonald, pp 2371 DOI:10.1039/DT9910002371

Charge-transfer salts formed from redox-active cubane cluster cations [M4(-C5H4R)4(µ3-E)4]n+(M = Cr, Fe or Mo; E = S or Se) and various anions Peter Baird, Judith A. Bandy, Malcolm L. H. Green, Andrew Hamnett, Elizabeth Marseglia, David S. Obertelli, Keith Prout and Jingui Qin, pp 2377 DOI:10.1039/DT9910002377

Sulphur compounds. Part 140. Structures and relative stabilities of seven isomeric forms of H2S2O2 Karol Miaskiewicz and Ralf Steudel, pp 2395 DOI:10.1039/DT9910002395

From [RuX6] to [Ru(RCN)6]: synthesis of mixed halide-nitrile complexes of ruthenium, and their spectroelectrochemical characterization in multiple oxidation states Colleen M. Duff and Graham A. Heath, pp 2401 DOI:10.1039/DT9910002401

Reactions of [RuCl2(PPh3)4] with mixed anhydrides of diphenylphosphinous and acrylic acids; structure of [RuCl{(Ph2PO)2H}(PPh3)(O2CCH2CH2PPh3)]·C4H8O Derek J. Irvine, Sheila A. Preston, David J. Cole-Hamilton and John C. Barnes, pp 2413 DOI:10.1039/DT9910002413

Synthesis and reactivity of manganese(II) dialkylamido complexes. Crystal and molecular structure of [Mn3(µ-NEt2)6-(µ-Cl)2{Li(thf)2}2]·C7H16(thf = tetrahydrofuran) and [Mn2(µ-NPri2)2(NPri2)2] Antonio Belforte, Fausto Calderazzo, Ulli Englert, Joachim Strähle and Klaus Wurst, pp 2419 DOI:10.1039/DT9910002419

Interaction of tin chlorides with iron, chromium and vanadium chlorides in tetrahydrofuran. Crystal structures of [Fe2(µ-Cl)3(thf)6][SnCl5(thf)], [Sn2(µ-OH)2Cl6(thf)2]·2thf and trans-[CrCl2(thf)4][SnCl5(thf)] Zofia Janas, Piotr Sobota and Tadeusz Lis, pp 2429 DOI:10.1039/DT9910002429

Kinetics and electron paramagnetic resonance evidence of an electron-transfer chain mechanism for PPh3 substitution of [Fe3(CO)12] Feng-Hurng Luo, Shehng-Rur Yang, Chen-Shun Li, Jiun-Pey Duan and Chien-Hong Cheng, pp 2435 DOI:10.1039/DT9910002435

Electron spin resonance studies of the oxidation of [TcVNCl2(EPh3)2](E = P or As) to [TcVINCl4]- by thionyl chloride: structure of dichloronitridobis(triphenylarsine)-technetium(V) John Baldas, John F. Boas, Silvano F. Colmanet and Geoffrey A. Williams, pp 2441 DOI:10.1039/DT9910002441

The chemistry of transition metal-germanium compounds. Part 2. Synthesis, characterization, structure and reactivity of transition-metal carbonyl-substituted germacyclopent-3-enes Deqing Lei, Mark J. Hampden-Smith, John W. Garvey and John C. Huffman, pp 2449 DOI:10.1039/DT9910002449

Notes. Synthesis and nuclear magnetic resonance spectroscopy of the platinum-gold clusters [Pt(AuPPh3){P(CH2CH2PPh2)3}]+ and [Pt(AuPPh3){N(CH2CH2PPh2)3}]+ Martin Peter, Paul Peringer and Ernst P. Müller, pp 2459 DOI:10.1039/DT9910002459

Characterisation of ortho- and meta-boric acids in the vapour phase Trevor Robert Gilson, pp 2463 DOI:10.1039/DT9910002463

Homoleptic vanadium(III) diacetone glucosides: how to make a Lewis acid chiral. Crystal structure of tris-(1,2:5,6-di-O-isopropylidene--D-glucofuranosato-O3)-bis(pyridine)vanadium(III) Javier Ruiz, Carlo Floriani, Angiola Chiesi-Villa and Carlo Guastini, pp 2467 DOI:10.1039/DT9910002467

Cubane structure of sodium derivatives of tetradentate Schiff bases Euro Solari, Stefania De Angelis, Carlo Floriani, Angiola Chiesi-Villa and Corrado Rizzoli, pp 2471 DOI:10.1039/DT9910002471

The X-ray structure of 1,4,8,11-tetraazacyclotetradecane-1,4,8,11-tetraacetic acid and its relevance to the protonation of polyaza polycarboxylic macrocycles Marie-Rose Spirlet, Jean Rebizant, Pierre P. Barthélemy and Jean F. Desreux, pp 2477 DOI:10.1039/DT9910002477

Letters Richard Dronkowski, Arndt Simon and Gordon J. Miller, pp 2483 DOI:10.1039/DT9910002483

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX039

Issue 10

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX041

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP047

New bis(ferrocenecarbonyl)- and bis(ferrocenyl)-appended diazatetrathia mixed-donor macrocyclic ligands and their copper-(II) and -(I) complexes Paul D. Beer, Jayne E. Nation, Sean L. W. McWhinnie, Mary E. Harman, Michael B. Hursthouse, Mark I. Ogden and Allan H. White, pp 2485 DOI:10.1039/DT9910002485

Macrocyclic ligand ring size effects. Part 2. Synthetic, structural and electrochemical studies of the interaction of NiII with 14-membered tetraaza macrocycles containing fused dibenzo substituents Kenneth R. Adam, Michael Antolovich, Larry G. Brigden, Anthony J. Leong, Leonard F. Lindoy, Philip J. Baillie, Daljit K. Uppal, Mary McPartlin, Bhavini Shah, Davide Proserpio, Luigi Fabbrizzi and Peter A. Tasker, pp 2493 DOI:10.1039/DT9910002493

Insertion of mercury into iron-halogen bonds. X-Ray structure of [(p-MeC6H4NC)5Fe HgI2] Silverio Coco, Pablo Espinet, Fernando Mayor and Xavier Solans, pp 2503 DOI:10.1039/DT9910002503

Synthesis and structures of tetranuclear 2-(dimethylamino)ethanethiolato complexes of zinc, cadmium and mercury involving both primary and secondary metal-halogen bonding Isidre Casals, Pilar González-Duarte, William Clegg, Concha Foces-Foces, Félix Hernández Cano, Martín Martínez-Ripoll, Montserrat Gómez and Xavier Solans, pp 2511 DOI:10.1039/DT9910002511

Reactions of the hydridethiolate complexes [MH(SC6H2R3-2,4,6)3(PMe2Ph)2](M = Mo or W, R = Me or Pri): X-ray crystal structures of [M(SC6H2Pri3-2,4,6)2(CO)2(PMe2Ph)2](M = Mo or W) Timothy E. Burrow, Alan J. Lough, Robert H. Morris, Adrian Hills, David L. Hughes, Janette D. Lane and Raymond L. Richards, pp 2519 DOI:10.1039/DT9910002519

Synthesis, characterization and stereochemistry of condensation products between (1R)-3-hydroxymethylenebornane-2-thione and diamines and their metal complexes Luigi Casella, Michele Gullotti, Roberto Pagliarin and Massimo Sisti, pp 2527 DOI:10.1039/DT9910002527

Complex formation between squarate (C4O42-) and CuIIL [L = 2,2-bipyridyl, 2,2 :6,2-terpyridyl or bis(2-pyridylcarbonyl)amide anion (bpca)] in dimethyl sulphoxide solution. Crystal structure of [Cu2(bpca)2(H2O)2(C4O4)] Isabel Castro, Juan Faus, Miguel Julve, Yves Journaux and Jorunn Sletten, pp 2533 DOI:10.1039/DT9910002533

Copper complexes of 1,1-di(2-pyridyl)ethyl methyl ether: X-ray crystal structures and reactions with dioxygen Sumit Bhaduri, Niteen Y. Sapre and Peter G. Jones, pp 2539 DOI:10.1039/DT9910002539

Synthesis, characterization, luminescence properties, and electrochemical behaviour of ruthenium(II) complexes with two new bi- and tri-dentate 2-pyridylquinoline ligands Sebastiano Campagna, Antonino Mamo and John K. Stille, pp 2545 DOI:10.1039/DT9910002545

Electrochemical and Mössbauer studies on iron(II) complexes of a new series of entwining ligands: stabilization of uni- and zero-valent oxidation states Md. Athar Masood, Ranga Jagannathan and Panthappally S. Zacharias, pp 2553 DOI:10.1039/DT9910002553

Molecular organization and dynamic behaviour of arene cluster complexes in the solid state. Crystal structures of [Os4H2(CO)10(6-C6H5Me)], [Os4H2(CO)10(6-C6H4Me2)] and [Ru6C(CO)14(6-C6H3Me3-1,3,5)] Dario Braga, Fabrizia Grepioni, Brian F. G. Johnson, Hong Chen and Jack Lewis, pp 2559 DOI:10.1039/DT9910002559

Synthesis of heteronuclear gold-rhodium cluster compounds and structural characterisation of [Rh(CNC8H9)3(AuPPh3)5]2+, [Rh(CNC8H9)2(AuPPh3)6(AuCl)2]+ and [Rh(CO)2(AuPPh3)7]2+ Simon G. Bott, Holm Fleischer, Mike Leach, D. Michael P. Mingos, Harry Powell, David J. Watkin and Michael J. Watson, pp 2569 DOI:10.1039/DT9910002569

Synthesis and structural characterization of gold-(I), -(III) and silver(I) complexes of the ylide ligand Ph3PCHC(O)NMe2. Crystal structure of [(AuPPh3)2{µ-C(PPh3)C(O)NMe2}]ClO4 José Vicente, María-Teresa Chicote, María-Cristina Lagunas and Peter G. Jones, pp 2579 DOI:10.1039/DT9910002579

The chemistry of uranium. Part 42. Cationic uranium(IV) complexes UX2L4Y2(X = Cl, Br or I; Y = ClO4 or BPh4; L = bulky strong neutral O-donor ligand) and [U(ClO4)4(OAsPh3)4]: crystal structures of [UX2L4][BPh4]2(L = tris(pyrrolidine-1-yl)phosphine oxide, X = Br or I) Jan G. H. du Preez, Leon Gouws, Hans Rohwer, Bernardus J. A. M. van Brecht, Ben Zeelie, Umberto Casellato and Rodolfo Graziani, pp 2585 DOI:10.1039/DT9910002585

Metallacyclic complexes. Part 5. Ligand properties of platinathietane-3-oxide complexes and the single-crystal X-ray structure of [Pt{CH(COPh)S(O)CH(COPh)}(PPh3)2·RhCl(CO)]·CH2Cl2·H2O John Fawcett, William Henderson, Raymond D. W. Kemmitt and David R. Russell, pp 2595 DOI:10.1039/DT9910002595

Synthesis, characterisation and crystal structure of a dirhodium(II) compound with two bridging trifluoroacetamidate ligands Marcus A. M. Daniels, Nilgun Mehmet and Derek A. Tocher, pp 2601 DOI:10.1039/DT9910002601

Reactions of sulphur diimides with di- and tri-silanes: 15N and 29Si nuclear magnetic resonance study and the crystal structure of bis[tert-butyl(trichlorosilyl)amino]sulphane Bernd Wrackmeyer, Stefan M. Frank, Max Herberhold, Arndt Simon and Horst Borrmann, pp 2607 DOI:10.1039/DT9910002607

Nuclear quadrupole resonance studies (63,65Cu and 79,81Br) of binuclear copper(I) polyhalide anions Sundara Ramaprabhu and Edwin A. C. Lucken, pp 2615 DOI:10.1039/DT9910002615

Crystal and molecular structure and magnetic properties of a new µ-oxalato binuclear copper(II) complex containing mepirizole Lucia Soto Tuero, Julia Garcia-Lozano, Emilio Escriva Monto, Matilde Beneto Borja, Françoise Dahan, Jean-Pierre Tuchagues and Jean-Pierre Legros, pp 2619 DOI:10.1039/DT9910002619

Actinide complexes of the calixarenes. Part 2. Synthesis and crystal structure of a novel thorium(IV) complex of p-tert-butylcalix[8]arene Jack M. Harrowfield, Mark I. Ogden and Allan H. White, pp 2625 DOI:10.1039/DT9910002625

Silver selectivity: a study of metal recognition in single and multiple phases Joyce C. Lockhart and David J. Rushton, pp 2633 DOI:10.1039/DT9910002633

Novel stannosilicates. Part 2. Cation-exchange studies Alan Dyer and Jalal J. Jafar, pp 2639 DOI:10.1039/DT9910002639

Phosphorus-31 and selenium-77 nuclear magnetic resonance spectra of phosphorus-poor phosphorous selenide compounds Hans-Peter Baldus, Roger Blachnik, Peter Loennecke and Bruce W. Tattershall, pp 2643 DOI:10.1039/DT9910002643

Synergic metal-ion sequestration by borate-polyhydroxy-aminocarboxylate systems as studied by 11B, 13C and 113Cd nuclear magnetic resonance spectroscopy Jacco van Haveren, Joop A. Peters, Jan G. Batelaan, Antonius P. G. Kieboom and Herman van Bekkum, pp 2649 DOI:10.1039/DT9910002649

Polyhedral iridathiaborane chemistry. Reactions of nido-6-SB9H11 and of [arachno-6-SB9H12]- with [{Ir(5-C5Me5)Cl2}2] to give nido-8,7-iridathiaundecarboranes. A nuclear magnetic resonance and structural study Karl Nestor, Xavier L. R. Fontaine, Norman N. Greenwood, John D. Kennedy and Mark Thornton-Pett, pp 2657 DOI:10.1039/DT9910002657

Synthesis and reactions of cyclopalladated compounds derived from N,N-dialkylbenzene-1,3-dicarbaldimines [alkyl = ethyl (H2L1), butyl or octyl] and N,N-dibenzylbenzene-1,3-dicarbaldimine. Crystal structure of [Pd2L1(py)4][ClO4]2(py = pyridine) Sukla Chakladar, Parimal Paul, K. Venkatsubramanian and Kamalaksha Nag, pp 2669 DOI:10.1039/DT9910002669

Formation of enol and acyl phosphine ligands via alkylation of a tungsten phosphaallyl complex: crystal structures of [WI{C6H4(PH2)[PMeC(O)CH2(C6H4Me-4)]-1,2}(CO)(-C5H5)]·0.5C4H8O and [WI{C6H4(PH2)[P{(CH2)4I}C(O)CH2(C6H4Me-4)]-1,2}(CO)(-C5H5)] James E. Denison, John C. Jeffery, Suanna Harvey and K. D. Vinindra Weerasuria, pp 2677 DOI:10.1039/DT9910002677

Synthesis and reactivity of bis(diphenylphosphine) methane(dppm)-bridged Pd-Mo and Pd-W complexes. Crystal structure of [Pd(µ-CO)(µ-dppm)2Mo(cp)(CO)][PF6](cp =5-C5H5) Pierre Braunstein, Benoît Oswald, André DeCian and Jean Fischer, pp 2685 DOI:10.1039/DT9910002685

Bis(allyl) ruthenium(IV) complexes. Part 2. Ruthenium complexes containing - and µ-pyrazine and - and µ-bis(diphenylphosphino)methane (dppm) ligands. Crystal structures of [{Ru(3:3-C10H16)Cl2}2(µ-dppm)]·Me2CO·CH2Cl2 and [{Ru(3:3-C10H16)Cl2}{Ru(6-C6H6)Cl2}(µ-dppm)]·1.5CHCl3 James G. Toerien and Petrus H. van Rooyen, pp 2693 DOI:10.1039/DT9910002693

Dimer formation in the crystal structure of (dithiobenzoato)(trithioperoxybenzoato)platinum(II) Takashi Kawamura, Masahiro Ebihara, Hiroaki Katayama, Hiroyuki Nishikawa and Tokio Yamabe, pp 2703 DOI:10.1039/DT9910002703

Magnetic properties of the alternating-chain compounds Cu(bipy)X2(bipy = 2,2-bipyridine, X = Br or Cl) Evgenia Spodine, Ana María Atria, Victor Calvo, Jorge Manzur, María Teresa Garland, Octavio Peña and Marcel Sergent, pp 2707 DOI:10.1039/DT9910002707

Thermodynamic and spectroscopic study of copper(II)-glycyl-L-histidylglycine complexes in aqueous solution Pier G. Daniele, Orfeo Zerbinati, Vincenzo Zelano and Giorgio Ostacoli, pp 2711 DOI:10.1039/DT9910002711

Structural and thermodynamic study of the effect of sterically hindering alkyl groups on complex stability Kirty V. Damu, Hulisani Maumela, Robert D. Hancock, Jan C. A. Boeyens and Susan M. Dobson, pp 2717 DOI:10.1039/DT9910002717

Synthesis, crystal structure and electronic properties of a 2Fe-2S complex with a bulky thiolato ligand, [NEt4]2[Fe2S2(SC6H2Me3-2,4,6)4] Norikazu Ueyama, Satoru Ueno, Takashi Sugawara, Kazuyuki Tatsumi, Akira Nakamura and Noritake Yasuoka, pp 2723 DOI:10.1039/DT9910002723

Kinetics and mechanism of the oxidation of iminodiacetate, nitrilotriacetate and ethylenediaminetetraacetate by trans-cyclohexane-1,2-diamine-N,N,N,N-tetraacetatomanganate(III) in aqueous media Sumana Gangopadhyay, Mahammad Ali, Swapan K. Saha and Pradyot Banerjee, pp 2729 DOI:10.1039/DT9910002729

Antimony(III) complexes with carboxylic acids. Part 2. Preparation and crystal structures of [Sb2Ag2(C6H6O7)4] and [SbNa(C6H6O7)2(H2O)2]·H2O [C6H6O7= citrate(2-)] David W. Hartley, Graham Smith, Dalius S. Sagatys and Colin H. L. Kennard, pp 2735 DOI:10.1039/DT9910002735

Synthesis and characterization of chiral rhenium -ketone complexes. Binding properties of symmetrical ketones and alkylcyclohexanones Dennis M. Dalton and J. A. Gladysz, pp 2741 DOI:10.1039/DT9910002741

Molecular encapsulation of transition metal complexes in cyclodextrins. Part 3. Structural consequences of varying the guest geometry in channel-type inclusion compounds Bernd Klingert and Grety Rihs, pp 2749 DOI:10.1039/DT9910002749

Electrophilic attack on diphosphazane-bridged derivatives of diruthenium nonacarbonyl by halogens. Crystal structure of [Ru2(µ-I)I(CO)3{µ-(PriO)2PN(Et)P(OPri)2}2] John S. Field, Raymond J. Haines, Eric Minshall, Clifford N. Sampson, Jörg Sundermeyer, Stephen F. Woollam, Christine C. Allen and Jan C. A. Boeyens, pp 2761 DOI:10.1039/DT9910002761

closo-Monocarbaboranes as ligands for transition metals: synthesis and reactivity of exo-diphosphineplatinum-closo-monocarbaborane complexes; structure of [Pt{But2P(CH2)2PBut2}(closo-CB11H12)][CB11H12] Gaspar S. Mhinzi, Stephen A. Litster, Alan D. Redhouse and John L. Spencer, pp 2769 DOI:10.1039/DT9910002769

Co-ordination chemistry of higher oxidation states. Part 38. Synthesis, spectroscopic and electrochemical studies of some trans-dihalogenoosmium complexes. Crystal structure of trans-[Os(PMe3)4Cl2]BF4 Neil R. Champness, William Levason, Roy A. S. Mould, Derek Pletcher and Michael Webster, pp 2777 DOI:10.1039/DT9910002777

Reactions of unisolable homoleptic aryls of niobium and tantalum with PMe2Ph and ButNC. Crystal structures of M(2,5-Me2C6H3)2(2-2,5-Me2C6H2)(PMe2Ph)2, M = Nb or Ta, and Ta(2-PhCNBut)(2-Ph2CNBut)2(CNBut) Stefan U. Koschmieder, Bilquis Hussain-Bates, Michael B. Hursthouse and Geoffrey Wilkinson, pp 2785 DOI:10.1039/DT9910002785

Notes. Synthesis and crystal structures of [PPh4][MN{ButNC(O)NBut}Cl2](M = Ru or Os); a new reaction of tert-butyl isocyanate. Synthesis of W[ButNC(O)NBut]2(NHBut)2 Wa-Hung Leung, Geoffrey Wilkinson, Bilquis Hussain-Bates and Michael B. Hursthouse, pp 2791 DOI:10.1039/DT9910002791

Preparation and characterization of two isocyanide derivatives of monosubstituted [Fe3(CO)9S2]; crystal structure of [Fe3(CO)8(CNPh)(µ2-S)2] Helgard G. Raubenheimer, Lorna Linford, Gert Kruger and Anthonie Lombard, pp 2795 DOI:10.1039/DT9910002795

Electron spin reasonance spectra of the perruthenate(VII) ion, [RuO4]- Andrew C. Dengel, John F. Gibson and William P. Griffith, pp 2799 DOI:10.1039/DT9910002799

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX043

Issue 11

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX045

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP051

Synthesis, characterization and crystal structure of trans-[2,6-bis(3-phenylpyrazol-1-yl-N2)pyridine-N]chloro-bis(trimethylphosphine)ruthenium(II) perchlorate: evidence for meridional steric crowding Carol A. Bessel, Ronald F. See, Donald L. Jameson, Melvyn Rowen Churchill and Kenneth J. Takeuchi, pp 2801 DOI:10.1039/DT9910002801

Synthesis of trinuclear complexes with mixed bridging ligands. X-Ray structure of [Pd{Rh(µ-pz)(µ-SBut)(CO)2}2](pz = pyrazolate) Anabel Elduque, Luis A. Oro, M. Teresa Pinillos, Cristina Tejel, Antonio Tiripicchio and Franco Ugozzoli, pp 2807 DOI:10.1039/DT9910002807

Heterobinuclear IrRh, RuRh and Rulr complexes with pyrazolate bridging ligands: reactivity towards chelating diphosphines; crystal structure of [(C5Me5)Ir(µ-pz)2(µ-CO)-Ir(CO)(dppen)]BPh4·0.5MeOH [pz = pyrazolate, dppen =cis-1,2-bis(diphenylphosphino)ethylene] Daniel Carmona, Joaquina Ferrer, Fernando J. Lahoz, Luis A. Oro, Josefa Reyes and Montserrat Esteban, pp 2811 DOI:10.1039/DT9910002811

Aryl compounds of rhodium: syntheses and X-ray crystal structures Robyn S. Hay-Motherwell, Stefan U. Koschmieder, Geoffrey Wilkinson, Bilquis Hussain-Bates and Michael B. Hursthouse, pp 2821 DOI:10.1039/DT9910002821

Photolysis of noble gas–fluorine mixtures; dimorphism in krypton fluoride chemistry Mohammed Al-Mukhtar, John H. Holloway, Eric G. Hope and Gary J. Schrobilgen, pp 2831 DOI:10.1039/DT9910002831

Methyl isocyanide complexes of a trinuclear platinum cluster: a model for chemisorption of isocyanides on platinum surfaces. Crystal structure of [Pt3(CNMe)2-(µ-Ph2PCH2PPh2)3][PF6]2·3Me2CO Richard J. Puddephatt, Mehdi Rashidi and Jagadese J. Vittal, pp 2835 DOI:10.1039/DT9910002835

Dialkylcarbamato complexes of palladium(II). Crystal structure of trans-[Pd(O2CNEt2)2(NHEt2)2] Adela Anillo, Daniela Belli Dell'Amico, Fausto Calderazzo, Mario Nardelli, Giancarlo Pelizzi and Lucia Rocchi, pp 2845 DOI:10.1039/DT9910002845

Preparation, characterization and thermal reactions of 1-oxa-2-ziconacyclopentanes and 1-oxa-2-zirconacyclohexane: crystal structures of [{Zr(C5H5)2(OCH2CH2CHMe)}2] and [Zr(C5Me5)2{OCH2(CH2)2CH2}] Kazushi Mashima, Masashi Yamakawa and Hidemasa Takaya, pp 2851 DOI:10.1039/DT9910002851

Synthesis and structure of copper(I), silver(I) and zinc(II) amides [Cu2(mpsa)2], [Cu6X2(mpsa)4](X = Cl or Br), [Ag4(mpsa)4] and [(ZnEt)2(mpsa)2][mpsa = 2-N(SiMe3)C5H3N-6-Me] Lutz M. Engelhardt, Geraldine E. Jacobsen, Wyona C. Patalinghug, Brian W. Skelton, Colin L. Raston and Allan H. White, pp 2859 DOI:10.1039/DT9910002859

Synthesis and crystal structures of novel one-dimensional polymers, [{M(bpen)X}][M = CuI, X = PF6–; M = AgI, X = ClO4–; bpen =trans-1,2-bis(2-pyridyl)ethylene] and [{Cu(bpen)(CO)(CH3CN)(PF6)}] Susumu Kitagawa, Shinji Matsuyama, Megumu Munakata and Tsunehiko Emori, pp 2869 DOI:10.1039/DT9910002869

Heterobimetallic aggregates of copper(I) with thio-tungstate and -molybdate. Cation effect in aggregation of MS4Cu4Cl4 units, a crystallographic study Francis Sécheresse, Sylvain Bernés, Francis Robert and Yves Jeannin, pp 2875 DOI:10.1039/DT9910002875

Structural modifications of hydroxyapatite induced by lead substitution for calcium Adriana Bigi, Massimo Gandolfi, Massimo Gazzano, Alberto Ripamonti, Norberto Roveri and Sunday A. Thomas, pp 2883 DOI:10.1039/DT9910002883

Dibismuth as a four-electron donor ligand. Synthesis and molecular and electronic structure of [M2(CO)4(-C5H4Me)2(µ-2-Bi2)](M = Mo or W) William Clegg, Neville A. Compton, R. John Errington, George A. Fisher, Nicholas C. Norman and Todd B. Marder, pp 2887 DOI:10.1039/DT9910002887

Syntheses, structures and properties of tri-n-butylphosphine cobalt complexes containing o-benzenedithiolate ligands in unusual co-ordination modes Beisheng Kang, Jinghai Peng, Maochun Hong, Daxu Wu, Xuetai Chen, Linghong Weng, Xinjian Lei and Hanqin Liu, pp 2897 DOI:10.1039/DT9910002897

Temperature-dependent conglomerate crystallization of carbonatobis(ethylenediamine)cobalt(III) bromide and its application to kinetic optical resolution Kazuaki Yamanari and Akira Fuyuhiro, pp 2903 DOI:10.1039/DT9910002903

Molecular motion in solids. The Mössbauer spectra of (-cyclopentadienyl)(-fluorobenzene)iron(II) salts Brian W. Fitzsimmons and Ian Sayer, pp 2907 DOI:10.1039/DT9910002907

Consequences of incremental steric crowding at the FeIIN6(S= 2) co-ordination sphere. Synthesis, spectra and electrochemistry Samiran Mahapatra, Nishi Gupta and Rabindranath Mukherjee, pp 2911 DOI:10.1039/DT9910002911

Manganese(III) complexes with MnIIIN3O3(S= 2) Co-ordination by sexidentate Schiff-base ligands: synthesis, spectra and electrochemistry Krishnamoorthi Ramesh, Debnath Bhuniya and Rabindranath Mukherjee, pp 2917 DOI:10.1039/DT9910002917

Co-ordination of 1,4,7,10-tetraazacyclotridecane ([13]aneN4) to nickel(III). Crystal structure of [Ni([13]aneN4)Br2]Br Hiroshi Miyamae, Kazuyo Yamauchi and Masahiro Yamashita, pp 2921 DOI:10.1039/DT9910002921

Entropy contribution to the relative solution stability of copper(III) and nickel(III) tetraazamacrocyclic complexes in aqueous perchloric acid Giancarlo De Santis, Luigi Fabbrizzi, Maurizio Licchelli and Piersandro Pallavicini, pp 2925 DOI:10.1039/DT9910002925

Kinetics and mechanism of hydrolysis of some amine–cyanoborances in acid perchlorate media Mrinal Kanti Das, Soumendra Nath Bandyopadhyay, Siddhartha Bhattacharyya and Rupendranath Banerjee, pp 2929 DOI:10.1039/DT9910002929

Kinetics of C–H bond and alkene oxidation by trans-dioxoruthenium(VI) porphyrins Clare Ho, Wa-Hung Leung and Chi-Ming Che, pp 2933 DOI:10.1039/DT9910002933

Kinetics of reaction of aquacobalamin with azide ion and hydrazoic acid: pH profile and activation parameters Helder M. Marques, Ernst L. J. Breet and Frans F. Prinsloo, pp 2941 DOI:10.1039/DT9910002941

Synthesis, ligand binding and biomimetic oxidations of deuterohaemin modified with an undecapeptide residue Luigi Casella, Michele Gullotti, Luca De Gioia, Enrico Monzani and Francesco Chillemi, pp 2945 DOI:10.1039/DT9910002945

Co-ordination behaviour of N-protected amino acids. Structural and spectroscopic study of complexes of CoII, NiII and CuII with N-(4-aminobenzoyl)glycine Luca Forti, Ledi Menabue and Monica Saladini, pp 2955 DOI:10.1039/DT9910002955

Copper(II) complexes with N-sulphonyl amino acids. Structure-stability relationships in binary species and ternary complexes with 2,2-bipyridine Giovanna Battistuzzi Gavioli, Marco Borsari, Ledi Menabue, Monica Saladini and Marco Sola, pp 2961 DOI:10.1039/DT9910002961

Synthesis of asymmetric alkyne-bridged dipalladium complexes from the paramagnetic cation [Pd2(µ-PhC2Ph)(-C5Ph5)2]+; crystal structures of [Pd2(bipy)(µ-PhC2Ph)(-C5Ph5)][Pd2(NCMe)(bipy)(µ-PhC2Ph)(-C5Ph5)][PF6]2·OEt2 and [Pd2(bipy){P(OPh)3}(µ-PhC2Ph)(-C5Ph5)][PF6] Neil G. Connelly, William E. Geiger, A. Guy Orpen, Joseph J. Orsini jun.  and Karen E. Richardson, pp 2967 DOI:10.1039/DT9910002967

Unsymmetric dicopper(II) complexes of dinucleating ligands bearing chemically distinct co-ordination environments Jonathan D. Crane, David E. Fenton, Jean Marc Latour and Arnold J. Smith, pp 2979 DOI:10.1039/DT9910002979

Metal-ion selectivity by macrocyclic ligands. Part 3. The interaction of MnII and CoII with pyridinyl-derived N3O2 macrocycles; X-ray structures of endomacrocyclic complexes of MnII and CoII Neil A. Bailey, David E. Fenton, Simon J. Kitchen, Terence H. Lilley, Mark G. Williams, Peter A. Tasker, Anthony J. Leong and Leonard F. Lindoy, pp 2989 DOI:10.1039/DT9910002989

Reaction between S4N4 and Ni2+ in dimethyl sulphoxide. Formation and characterization in solution of S4N2(NH2)2, a novel sulphur–nitrogen heterocycle precursor of [Ni(S2N2H)2] M. Luisa Calatayud, José A. Ramirez and Juan Faus, pp 2995 DOI:10.1039/DT9910002995

Kinetics of reaction of uranium(IV) and hexachloroiridate(IV) in acid perchlorate solutions. Evidence for a binuclear intermediate Refat M. Hassan, pp 3003 DOI:10.1039/DT9910003003

New routes towards halogeno complexes of gold by halide exchange from [Au2Cl6]. Crystal and molecular structure of triphenylmethylium tetrachloroaurate(III), [CPh3][AuCl4] Daniela Belli Dell'Amico, Fausto Calderazzo, Antonino Morvillo, Giancarlo Pelizzi and Pierluigi Robino, pp 3009 DOI:10.1039/DT9910003009

Halogenocarbonyl complexes of gold Daniela Belli Dell'Amico, Fausto Calderazzo, Pierluigi Robino and Annalaura Segre, pp 3017 DOI:10.1039/DT9910003017

Reactions of co-ordinated ligands. Part 52. Formation and reactivity of molybdenum vinylidene anions; crystal structures of [Mol(4-CH2CHCHCHCH2But){P(OMe)3}(-C5H5)] and [Mo(3-CButCHCHCMe2CO){P(OMe)3}2(-C5H5)] Robert G. Beevor, Mark J. Freeman, Michael Green, Carolyn E. Morton and A. Guy Orpen, pp 3021 DOI:10.1039/DT9910003021

Bromination of imidazole complexes of pentaammine-cobalt(III). Synthesis, structure and reactivity Allan G. Blackman, David A. Buckingham, Charles R. Clark and Jim Simpson, pp 3031 DOI:10.1039/DT9910003031

Synthesis of technetium complexes with a P,N bidentate phosphine amine ligand. Crystal structure of bis[(o-amidophenyl)diphenylphosphine-N,P][(o-aminophenyl)diphenylphosphine-N,P]technetium(III) perchlorate Fiorenzo Refosco, Cristina Bolzati, Anna Moresco, Giuliano Bandoli, Alessandro Dolmella, Ulderico Mazzi and Marino Nicolini, pp 3043 DOI:10.1039/DT9910003043

Nucleophilic substitution reactions at planar four-co-ordinate monoanionic platinum(II) complexes Bruno Pitteri, Lucio Cattalini, Gavino Chessa, Giampaolo Marangoni, Nicoletta Stevanato and Martin L. Tobe, pp 3049 DOI:10.1039/DT9910003049

Photochemical studies of alkylammonium molybdates. Part 9. Structure of dimagnetic blue species involved in the photoredox reaction of [Mo7O24]6– Toshihiro Yamase, pp 3055 DOI:10.1039/DT9910003055

Oxatriaza macrocyclic ligands: studies of protonation and metal complexation Maria Teresa S. Amorim, Sílvia Chaves, Rita Delgado and Joăo J. R. Fraústo da Silva, pp 3065 DOI:10.1039/DT9910003065

Niobium-93 nuclear magnetic resonance studies of the solvolysis of NbCl5 by alcohols G. Robert Lee and Joe A. Crayston, pp 3073 DOI:10.1039/DT9910003073

Interaction of long polyazaalkanes with zinc(II) and cadmium(II) ions. A thermodynamic and 13C nuclear magnetic resonance study Juan Aragó, Andrea Bencini, Antonio Bianchi, Enrique Garcia-Espańa, Mauro Micheloni, Piero Paoletti, Jose A. Ramirez and Agustín Rodriguez, pp 3077 DOI:10.1039/DT9910003077

Bis(cyclooctatetraene) derivatives of zirconium(IV) and hafnium(IV): syntheses and Lewis base adducts. Crystal structures of [Zr(8-C8H8)(4-C8H8)], [Hf{8-C8H6(SiMe3)2}{4-C8H6(SiMe3)2}], [Zr(8-C8H8)(4-C8H8)(NH3)] and [Zr(8-C8H8)(4-C8H8)(CNBut)] Pietro Berno, Carlo Floriani, Angiola Chiesi-Villa and Corrado Rizzoli, pp 3085 DOI:10.1039/DT9910003085

Improved synthesis and structure of solvated and unsolvated forms of cyclooctatetraene-zirconium and -hafnium dichloride Pietro Berno, Carlo Floriani, Angiola Chiesi-Villa and Corrado Rizzoli, pp 3093 DOI:10.1039/DT9910003093

Synthesis, structure and isomerism of [Mn2(µ-PPhR)2(CO)8](R = H, alkyl, acyl or carboxylate); crystal structures of trans-[Mn2(µ-PPhR)2(CO)8](R = H or COMe) Michael P. Brown, John Buckett, Marjorie M. Harding, Ruth M. Lynden-Bell, Martin J. Mays and Kevan W. Woulfe, pp 3097 DOI:10.1039/DT9910003097

Reactions of P2Ph4 with alkyne-bridged dicobalt carbonyl complexes; crystal structures of [Co2{µ-C2(CO2Me)2}(µ-P2Ph4)(CO)4], [Co2{µ-PPh2CHCPhC(O)}(µ-PPh2)(CO)4] and [Co2{µ-PPh2C(O)CHCH}(µ-PPh2)(CO)3(PPh3)] Andrew J. M. Caffyn, Martin J. Mays, Gregory A. Solan, Dario Braga, Piera Sabatino, Gráinne Conole, Mary McPartlin and Harold R. Powell, pp 3103 DOI:10.1039/DT9910003103

Studies of mixed-valence states in three-dimensional halogen-bridged gold compounds, Cs2AuIAuIIIX6(X = Cl, Br or I). Part 1. Synthesis, X-ray powder diffraction, and electron spin resonance studies of CsAu0.6Br2.6 Hiroshi Kitagawa, Norimichi Kojima, Nobuyuki Matsushita, Toshiro Ban and Ikuji Tsujikawa, pp 3115 DOI:10.1039/DT9910003115

Studies of mixed-valence states in three-dimensional halogen-bridged gold compounds, Cs2AuIAuIIIX6, (X = Cl, Br or I). Part 2. X-Ray photoelectron spectroscopic study Hiroshi Kitagawa, Norimichi Kojima and Tsuyoshi Nakajima, pp 3121 DOI:10.1039/DT9910003121

Ultraviolet–visible spectroscopic studies on manganese and rhenium oxide fluorides in low-temperature matrices Alan K. Brisdon, John H. Holloway, Eric G. Hope, Paul J. Townson, William Levason and J. Steven Ogden, pp 3127 DOI:10.1039/DT9910003127

Notes. Structure of chromyl chloride (CrO2Cl2) in a nitrogen matrix and in the solid state as determined by X-ray absorption spectroscopy Mark D. Spicer and Nigel A. Young, pp 3133 DOI:10.1039/DT9910003133

Synthesis and structure of lithium cuprate Li3Cu2O4 Mark T. Weller, Dean R. Lines and David B. Currie, pp 3137 DOI:10.1039/DT9910003137

Complexation of cobalt(II) by the hydrogenated form of N,N-o-phenylenebis(salicylideneimine): the crystal structure of a trinuclear cobalt(II) complex Euro Solari, Carlo Floriani, Desmond Cunningham, Tim Higgins and Patrick McArdle, pp 3139 DOI:10.1039/DT9910003139

Stereochemistry of mixed thiolate and ditertiary phosphine cobalt(II) complexes. Crystal structures of [Co{Ph2P(CH2)3PPh2}(SPh)2] and [Co{Ph2PCH2CH2P(Ph)CH2CH2PPh2}(SPh)2] Guowei Wei, Maochun Hong, Zhiying Huang and Hanqin Liu, pp 3145 DOI:10.1039/DT9910003145

Displacement of tetrahydrofuran ligands by tripodal phosphines. Crystal structure of [MoCl3{N(CH2CH2PPh2)3}]·C4H8O Maria J. Fernández-Trujillo, Manuel García Basallote, Pedro Valerga, Maria C. Puerta and David L. Hughes, pp 3149 DOI:10.1039/DT9910003149

Crystal and molecular structure of antimony trifluoride–terpyridine 1 : 1 adduct: a case of pseudo-pentagonal-bipyramidal geometry Luigi P. Battaglia, Anna Bonamartini Corradi, Giorgio Pelosi, Andrea Cantoni, Giuseppe Alonzo and Nuccio Bertazzi, pp 3153 DOI:10.1039/DT9910003153

Photophysical and photochemical properties of ruthenium and osmium complexes with substituted terpyridines Marc Beley, Jean-Paul Collin, Jean-Pierre Sauvage, Hideki Sugihara, Francine Heisel and Albert Miehé, pp 3157 DOI:10.1039/DT9910003157

Electrochemistry of the [Cu(Hdpa)2]2+/+ couple (Hdpa = di-2-pyridylamine) Arnaldo Cinquantini, Giuliana Opromolla and Piero Zanello, pp 3161 DOI:10.1039/DT9910003161

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX047

Issue 12

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FX049

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100FP055

Syntheses and crystal structures of complexes [LO(H2O)V(µ-O)WO2L]Cl(ClO4) and [L(acac)MoIII(µ-O)MoVIO2L][BPh4]2(L,L= 1,4,7-triazacyclononane and its 1,4,7-trimethyl derivative; acac = pentane-2,4-dionate) Ursula Bossek, Petra Knopp, Christine Habenicht, Karl Wieghardt, Bernhard Nuber and Johannes Weiss, pp 3165 DOI:10.1039/DT9910003165

Reactions of co-ordinated ligands. Part 53. Synthesis of dimolybdenum and ditungsten µ-,2-(4e)-vinylidene and -allenylidene complexes; crystal structures of [N(PPh3)2][Mo2{µ-:2-(3e)-C2Ph}(CO)4(5-C9H7)2], [Mo2{µ-:2-(4e)-CC(Ph)(CH2)4OMe}(CO)4(-C5H5)2] and [Mo2{µ-:2-(4e)-CCCMe2}(CO)4(-C5H5)2] Simon F. T. Froom, Michael Green, Richard J. Mercer, Katherine R. Nagle, A. Guy Orpen and Richard A. Rodrigues, pp 3171 DOI:10.1039/DT9910003171

Single-crystal electron paramagnetic resonance investigation of -irradiated K2[MoO(O2)F4]·H2O and molybdenum-doped K2[Nb(O2)F5]·H2O Geetha Ramakrishnan, Pillutla Sambasiva Rao and Sankaran Subramanian, pp 3185 DOI:10.1039/DT9910003185

Structural, electronic and electron paramagnetic resonance study of (pyridine-2,6-dicarboxylato)copper(II) complexes with substituted imidazoles How Ghee Ang, Whei Lu Kwik, Graeme R. Hanson, Jeffrey A. Crowther, Mary McPartlin and Nick Choi, pp 3193 DOI:10.1039/DT9910003193

Thermodynamic stereoselectivity assisted by weak interactions in metal complexes. Copper(II) ternary complexes of cyclo-L-histidyl-L-histidine and L- or D-amino acids in aqueous solution Giuseppe Arena, Raffaele P. Bonomo, Luigi Casella, Michele Gullotti, Giuseppe Impellizzeri, Giuseppe Maccarrone and Enrico Rizzarelli, pp 3203 DOI:10.1039/DT9910003203

Studies of mixed-valence states in three-dimensional halogen-bridged gold compounds, Cs2AuIAuIIIX6(X = Cl, Br or I). Part 3. Gold-197 Mössbauer spectroscopic study Hiroshi Kitagawa, Norimichi Kojima and Hiroshi Sakai, pp 3211 DOI:10.1039/DT9910003211

New binuclear iron-vanadium complexes of arylazo oximates. Crystal structure of [Fe(PhNNCPhNO)3VO(bipy)]PF6(bipy = 2,2-bipyridine) Partha Basu, Samudranil Pal and Animesh Chakravorty, pp 3217 DOI:10.1039/DT9910003217

Metallaheteroborane chemistry. Part 9. Syntheses and spectroscopy of platinum and palladium phosphine complexes containing 5-{As2B9}-based cluster ligands. Crystal structures of [3,3-L2-closo-3,1,2-PtAs2B9H9](L = PPh3 or PMe2Ph) and [3-Cl-3,8-(PPh3)2-closo-3,1,2-PdAs2B9H8] Marguerite McGrath, Trevor R. Spalding, Xavier L. R. Fontaine, John D. Kennedy and Mark Thornton-Pett, pp 3223 DOI:10.1039/DT9910003223

Synthesis and co-ordination chemistry of new Schiff-base bis(crown ether) ligands containing recognition sites for alkali- and transition-metal guest cations. Crystal structure of a copper(I)-potassium complex Paul D. Beer, Christopher G. Crane and Michael G. B. Drew, pp 3235 DOI:10.1039/DT9910003235

Synthesis and crystal structure of two stereochemical isomers of the trans-dichloro(1,4,8,11-tetraazacyclotetradecane)chromium(III) cation Luisa M. Flores-Vélez, Javier Sosa-Rivadeneyra, Martha E. Sosa-Torres, María J. Rosales-Hoz and R. A. Toscano, pp 3243 DOI:10.1039/DT9910003243

Use of silver(I) complexes in synthesis of bis- and tris-[2-(arylazo)pyridine] complexes of ruthenium(II) and investigation of solid-state isomerisation Alok K. Deb, Maushumi Kakoti and Sreebrata Goswami, pp 3249 DOI:10.1039/DT9910003249

Metal-betaine interactions. Part 13. Preparation and crystal structures of four polymeric silver(I) complexes of betaine derivatives Xiao-Ming Chen and Thomas C. W. Mak, pp 3253 DOI:10.1039/DT9910003253

Vanadium(III) complexes with VN3O3 co-ordination by sexidentate Schiff-base ligands: synthesis, spectra and redox activity Krishnamoorthi Ramesh and Rabindranath Mukherjee, pp 3259 DOI:10.1039/DT9910003259

Crystal and molecular structure and solution behaviour of low-spin (3-methyl-1,3,5,8,12-pentaazacyclotetradecane)4N1,N5,N8,N12)nickel(II) diperchlorate Luigi Fabbrizzi, Anna Maria Manotti Lanfredi, Piersandro Pallavicini, Angelo Perotti, Angelo Taglietti and Franco Ugozzoli, pp 3263 DOI:10.1039/DT9910003263

Effect of co-ordination mode on the physical properties of pyrazinyltriazole ligands bound to bis(2,2-bipyridyl)ruthenium(II) Ronald Hage, Jaap G. Haasnoot, Heleen A. Nieuwenhuís, Jan Reedijk, Renyí Wang and Johannes G. Vos, pp 3271 DOI:10.1039/DT9910003271

Kinetics of oxidation of aromatic hydrocarbons and tetrahydrofuran by trans-dioxoruthenium(VI) complexes Chi-Ming Che, Wai-Tong Tang, Kwok-Yin Wong and Chi-Keung Li, pp 3277 DOI:10.1039/DT9910003277

Kinetics of binding of O2 and CO to double-sided porphyrinatoiron(II) complexes Teruyuki Komatsu, Etsuo Hasegawa, Shin-ichi Kumamoto, Hiroyuki Nishide and Eishun Tsuchida, pp 3281 DOI:10.1039/DT9910003281

Metal-ligand bonding properties of double-sided porphyrin complexes: influence of bulky ester groups Eishun Tsuchida, Teruyuki Komatsu, Taisaku Nakata, Etsuo Hasegawa, Hiroyuki Nishide and Hidenari Inoue, pp 3285 DOI:10.1039/DT9910003285

Crystal structure of monomeric hydrated iron(III) 5,10,15,20-tetra(N-methyl-4-pyridinio)porphyrin pentachloride; an ionic haem model Fritjof C. F. Körber, John R. Lindsay Smith, Stephen Prince, Pierre Rizkallah, Colin D. Reynolds and David R. Shawcross, pp 3291 DOI:10.1039/DT9910003291

Protonation of trans-[Mo(C2H4)2(Ph2PCH2CH2PPh2)2]: sites of protonation and factors influencing the formation of ethane and ethylene Kay E. Oglieve and Richard A. Henderson, pp 3295 DOI:10.1039/DT9910003295

Synthesis and reactions of complexes of 1,3-bis(diphenyl-phosphino)-2-methylallyl with molybdenum or tungsten tetracarbonyls Bernard L. Shaw and Jonathan D. Vessey, pp 3303 DOI:10.1039/DT9910003303

Asymmetric homo- and hetero-bimetallic complexes of the nickel group elements. Crystal structure of [(C6F5)2Pd(µ-Cl)2Pt(PEt3)2] Gregorio López, Gabriel García, Gregorio Sánchez, Concepción de Haro, María D. Santana, Jaume Casabó, Maite Caldés, Milagros Mejías, Elíes Molins and Carles Miravitlles, pp 3311 DOI:10.1039/DT9910003311

When is a vertex not a vertex? An analysis of the structures of [MB10H12] metallaboranes Stuart A. Macgregor, Andrew J. Wynd, Nicola Moulden, Robert O. Gould, Paul Taylor, Lesley J. Yellowlees and Alan J. Welch, pp 3317 DOI:10.1039/DT9910003317

Reactivity of sulphuryl chloride in acetonitrile with the elements Alfred A. Woolf, pp 3325 DOI:10.1039/DT9910003325

Reaction of aluminium alkoxides with various glycols and the layer structure of their products Masashi Inoue, Hiroshi Kominami and Tomoyuki Inui, pp 3331 DOI:10.1039/DT9910003331

Restricted rotation about a metal-arene bond caused by the steric effects of proximal ethyl groups; stereodynamics of some complexes of 1,3,5-triethyl-2,4,6-tris(trimethylsilylmethyl)benzene John A. Chudek, Geoffrey Hunter, Regina Louise MacKay, Peter Kremminger and Walter Weissensteiner, pp 3337 DOI:10.1039/DT9910003337

Observation of slowed rotation about the 6-arene-chromium bond in the tripodal chromium complexes of the trimers of bicyclo[2.2.1]hept-2-yne: intramolecular rotational barriers in organometallic complexes and their correlation with internal non-bonding interactions and structural changes Geoffrey Hunter, Regina Louise MacKay, Peter Kremminger and Walter Weissensteiner, pp 3349 DOI:10.1039/DT9910003349

Binuclear copper(II) complexes of a new sulphur-containing binucleating ligand: structural and physicochemical properties Azdine Benzekri, Patrick Dubourdeaux, Jean-Marc Latour, Paul Rey and Jean Laugier, pp 3359 DOI:10.1039/DT9910003359

Synthesis and characterization of a new copper(II) phthalocyaninate substituted with four 15-membered tetraazamacrocycles and its water-soluble pentanuclear complexes Aysegül Gürek, Vefa Ahsen, Ahmet Gül and Özer Bekârolu, pp 3367 DOI:10.1039/DT9910003367

Reactivity of chloro(phthalocyaninato)iron(III) in pyridine-water Fabrizio Monacelli, pp 3373 DOI:10.1039/DT9910003373

Ring opening versus phenyl-phosphorus bond cleavage in incorporating a phosphole into triosmium clusters Antony J. Deeming, Nicholas I. Powell, Alejandro J. Arce, Ysaura De Sanctis and Jorge Manzur, pp 3381 DOI:10.1039/DT9910003381

Matrix-isolation infrared and ultraviolet-visible studies on some transition-metal pentachlorides and pentabromides Richard K. Bellingham, John T. Graham, Peter J. Jones, Julia R. Kirby, William Levason, J. Steven Ogden, Alan K. Brisdon and Eric G. Hope, pp 3387 DOI:10.1039/DT9910003387

Spectroscopic studies of nickel(II) carbonic anhydrase and its adducts with inorganic anions José M. Moratal, María-José Martínez-Ferrer, Antonio Donaire, Josep Castells, Jesús Salgado and Hermas R. Jiménez, pp 3393 DOI:10.1039/DT9910003393

Generation of anodic and cathodic currents based on photoexcited tris(2,2-bipyrazine)ruthenium(II) in aqueous solutions Suzuko Yamazaki-Nishida, Yutaka Harima and Kazuo Yamashita, pp 3401 DOI:10.1039/DT9910003401

Synthesis, characterization, structures and reactivities of dinuclear copper(I) complexes of three new binucleating hexadentate ligands having N2P4 or N2As4 donor sites Mirza Mohammed Taqui Khan, Parimal Paul, Krishnan Venkatasubramanian and Sapna Purohit, pp 3405 DOI:10.1039/DT9910003405

Pseudohalogeno-bonding of thallium(III) porphyrins, stabilisation of isocyano bonding. Crystal structure of isocyano(5,10,15,20-tetraphenylporphyrinato)thallium(III) Athanassios G. Coutsolelos, Anna Tsapara, Dimitra Daphnomili and Donald L. Ward, pp 3413 DOI:10.1039/DT9910003413

Size and shape characteristics of inorganic molecules and ions and their relevance to molecular packing problems D. Michael P. Mingos and Andrew L. Rohl, pp 3419 DOI:10.1039/DT9910003419

Investigation of the hydrolysis of [Sn(CH3)3(H2O)2]+ in aqueous solution by tin-119 nuclear magnetic resonance spectroscopy Michael J. Hynes, Jennifer M. Keely and James McManus, pp 3427 DOI:10.1039/DT9910003427

Metal complexes of benzodiazepines. Part 3. Synthesis and characterization of organometallic complexes of platinum(II) Maria C. Aversa, Paola Bonaccorsi, Matteo Cusumano, Placido Giannetto and Domenico Minniti, pp 3431 DOI:10.1039/DT9910003431

Orthometallated amidine complexes of palladium, platinum and nickel(II). Crystal structure of [Pd{p-CH3C6H4NC-(CH3)NHC6H3CH3-p}(5-C5H5)] James Barker, Neil D. Cameron, Melvyn Kilner, Mouayed M. Mahmoud and Stephen C. Wallwork, pp 3435 DOI:10.1039/DT9910003435

Notes. Electronic, Raman and resonance-Raman spectroscopy of copper(II)-platinum(IV) linear-chain chloride-bridged complexes of 1,2-diaminoethane Robin J. H. Clark, David J. Michael and Masahiro Yamashita, pp 3447 DOI:10.1039/DT9910003447

Additions and corrections Mark Crocker, Michael Green, Judith A. K. Howard, Nicholas C. Norman and Diane M. Thomas, pp 3451 DOI:10.1039/DT9910003451

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BX051

Index pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT99100BA001