1989 year
Main Index

Issue 1

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX001

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP001

Instructions for authors (1989) J. Chem. Soc., Dalton Trans. DOI:10.1039/DT989000000v

IUPAC publications on nomenclature and symbolism J. Chem. Soc., Dalton Trans. DOI:10.1039/DT9890000xxi

A further investigation of the polarized single-crystal electronic absorption spectrum of [AsPh4][CrOCl4] David Collison, pp 1 DOI:10.1039/DT9890000001

Synthesis, structure, and dynamic behaviour of two isomeric triosmium clusters containing the ethoxyvinylidene (CCHOEt) and ethoxyethyne (CHCOEt) ligands respectively Esther Boyar, Antony J. Deeming, Mark S. B. Felix, Shariff E. Kabir, Trushar Adatia, Ravindra Bhusate, Mary McPartlin and Harold R. Powell, pp 5 DOI:10.1039/DT9890000005

Polymeric thiolate complexes in solution. Stability constants of the cadmium(II) complexes of 3-aminopropane-1-thiol Pilar González-Duarte and Josep Vives, pp 13 DOI:10.1039/DT9890000013

Lead(II) and barium(II) complexes of a potentially octadentate macrocyclic ligand (H4L), capable of providing endogenous alkoxy and phenoxy bridges. The X-ray crystal structures of [Pb(H4L)][ClO4]2, [Pb2(H2L)][ClO4]2, and [(H6L)(H2O)2][ClO4]2 Santokh S. Tandon and Vickie McKee, pp 19 DOI:10.1039/DT9890000019

Rhodium complexes of the binucleating ligands pyridine-2-thiolate and benzothiazole-2-thiolate. Crystal structures of [{Rh(µ-SC5H4N)(CO)2}2] and [{Rh(µ-SC5H4N)(tfbb)}2]·Me2CO (tfbb = tetrafluorobenzobarrelene) Miguel A. Ciriano, Fernando Viguri, Jesus J. Perez-Torrente, Fernando J. Lahoz and Luis A. Oro, pp 25 DOI:10.1039/DT9890000025

A theoretical study on the co-ordination of dinitrogen and related molecules to nickel(0): ab initio calculations on the model compounds [Ni(PH3)2(N2)], [Ni(PH3)2(N2CH2)], and [Ni(PH3)2(N2H2)] Marzio Rosi, Antonio Sgamellotti, Francesco Tarantelli, Carlo Floriani and Lorenz S. Cederbaum, pp 33 DOI:10.1039/DT9890000033

The interaction of 1-methylimidazoline-2(3H)-thione with copper(II) salts Eric W. Ainscough, Edward N. Baker, Alistair G. Bingham and Andrew M. Brodie, pp 39 DOI:10.1039/DT9890000039

Five-co-ordinated silicon compounds: geometry of formation by intramolecular co-ordination. Crystal structure of 2-(dimethylaminomethyl)phenyl-1-naphthylsilane Jacqueline Boyer, Claire Brelière, Francis Carré, Robert J. P. Corriu, Agapit Kpoton, Monique Poirier, Gérard Royo and J. Colin Young, pp 43 DOI:10.1039/DT9890000043

Crystal structure, spectroscopic and magnetic properties of the complex [Cu(paphy)(NCS)(SCN)](paphy = pyridine-2-carbaldehyde 2-pyridylhydrazone). An unusual di-µ-thiocyanato-N bridged copper(II) dimer José L. Mesa, Teófilo Rojo, María I. Arriortua, Gerard Villeneuve, José V. Folgado, Aurelio Beltrán-Porter and Daniel Beltrán-Porter, pp 53 DOI:10.1039/DT9890000053

An investigation of halide abstraction by arsenic(III): reactions of AsCl3 with MCl2(M = Mg or Zn) and TiCl4 in donor solvents (MeCn or POCl3). Formation and crystal structure of the dimeric titanium(IV) compound [Ti2Cl6(POCl3)2(PO2Cl2)2] Preet P. K. Claire, Gerald R. Willey and Michael G. B. Drew, pp 57 DOI:10.1039/DT9890000057

Comparison of the structures and properties of [N(C2H5)4][Pt{{S2C2(CN)2}2] and [H3O]x[NH4]1-x[Pt{S2C2(CN)2}2]·2 -xH2O Peter I. Clemenson, Allan E. Underhill, Michael B. Hursthouse and Richard L. Short, pp 61 DOI:10.1039/DT9890000061

The crystal structures of K[Pd{S2C2(CN)2}2]·H2O and [NH4][Pd{S2C2(CN)2}2]·H2O Michael B. Hursthouse, Richard L. Short, Peter I. Clemenson and Allan E. Underhill, pp 67 DOI:10.1039/DT9890000067

(Diphenylphosphinomethyl)diphenylphosphine sulphide (Ph2PCH2PPh2S) and its methanide anion Ph2PCHPPh2S- as ligands in organogold chemistry. X-Ray crystal structure of cis-[Au(C6F5)2(PPh2CHPPh2S)] Rafael Usón, Antonio Laguna, Mariano Laguna, M. Nieves Fraile, Peter G. Jones and Cristina Freire Erdbrügger, pp 73 DOI:10.1039/DT9890000073

Halogeno, hydride, and alkyl carbonyl-monocyclopentadienyl niobium derivatives. Crystal and molecular structure of [Nb(-C5H5)Cl(H)(CO)(PMe3)2] Felix A. Jalón, Antonio Otero, Pascual Royo, José Luis Balcazar, Feliciana Florencio and Severino García-Blanco, pp 79 DOI:10.1039/DT9890000079

Tetra-aza macrocyclic complexes containing a pendant amino group. Copper(II), nickel(II), and cobalt(III) complexes of 5-aminomethyl-2,5,10,12-tetramethyl-1,4,8,1 1-tetra-azacyclotetradecane (L) and X-ray structural characterisation of the cobalt(III) complex [Co(L)Cl][ClO4]Cl·EtOH Robert W. Hay, Mahesh P. Pujari, Bohdan Korybut-Daszkiewicz, George Ferguson and Barbara L. Ruhl, pp 85 DOI:10.1039/DT9890000085

Structural, spectroscopic, and electrochemical characterization of tetrakis-µ-(2-pyrrolidinonato)-dirhodium(II) and tetrakis-µ-(-valerolactamato)-dirhodium(II) John L. Bear, Robert S. Lifsey, Lai K. Chau, Mohammad Q. Ahsan, James D. Korp, Madhav Chavan and Karl M. Kadish, pp 93 DOI:10.1039/DT9890000093

The equilibrium of strontium ion exchange on sodium titanate, Na4Ti9O20·xH2O Jukka Lehto, Risto Harjula and Anne-Marie Girard, pp 101 DOI:10.1039/DT9890000101

Synthesis of -, -phosphorus functionalized alkyl lithium species; X-ray structures of [{Li(L)(Ch2PMeR)}2][L =NNNN-tetramethylethylenediamine (tmen), R = Me or Ph; L =(-)sparteine, R = Ph] and [Li(tmen){CH(SiMe3)C6H4PPh2-o}] Lindsay T. Byrne, Lutz M. Engelhardt, Geraldine E. Jacobsen, Wing-Por Leung, Rocco I. Papasergio, Colin L. Raston, Brian W. Skelton, Paul Twiss and Allan H. White, pp 105 DOI:10.1039/DT9890000105

Relative importance of the inductive and steric effects of alkyl groups (R) in understanding the nature of the CoIII-C bond in alkyl cobaloximes, and comments on related alkyl cobalamins Dipankar Datta and G. Tomba Sharma, pp 115 DOI:10.1039/DT9890000115

Studies in Werner clathrates. Part 9. Structures with bis(isothiocyanato)-tetrakis(4-phenylpyridine)nickel(II) as host Luigi R. Nassimbeni, Margaret L. Niven and Michael W. Taylor, pp 119 DOI:10.1039/DT9890000119

Synthesis, electrochemistry, and electron spin resonance spectra of some seventeen-electron complexes containing the {Mo(NO)}2+ core and the molecular structure of [Mo(NO){HB(Me2pz)3}(pyr)2] Najat Al Obaidi, Anthony J. Edwards, Christopher J. Jones, Jon A. McCleverty, Bryan D. Neaves, Frank E. Mabbs and David Collison, pp 127 DOI:10.1039/DT9890000127

Thermodynamics of the formation of metal complexes of 1,4,10-trioxa-7,13-diazacyclopentadecane-N,N-diacetic acid and of 1,4,10,13-tetraoxa-7,16-diazacyclo-octadecane-N,N-diacetic acid Rita Delgado, João J. R. Fraústo da Silva, Maria Cândida T. A. Vaz, Piero Paoletti and Mauro Micheloni, pp 133 DOI:10.1039/DT9890000133

Chelate-stabilised primary, secondary, and tertiary alcohol and alkoxo platinum(II) complexes. X-Ray crystal structure of [Pt(Ph2PCH2CH2O)2]·H2O Nathaniel W. Alcock, W. G. Platt and Paul G. Pringle, pp 139 DOI:10.1039/DT9890000139

Oxovanadium(IV) and dioxomolybdenum(VI) complexes: synthesis from the corresponding acetylacetonato complexes and X-ray structures Seunghee Lee, Carlo Floriani, Angiola Chiesi-Villa and Carlo Guastini, pp 145 DOI:10.1039/DT9890000145

Kinetics of the oxidation of chloride ions by tris(2,2-bipyridine)nickel(III) ions in aqueous perchlorate media David Fox and Cecil F. Wells, pp 151 DOI:10.1039/DT9890000151

Reactivity of cationic molybdenum(II) complexes. Part 3. Synthesis of methoxide and carbomethoxide derivatives of -pentamethylcyclopentadienyl-molybdenum(II) and the crystal structure determination of the oxidation product trans-[{Mo(-C5Me5)(O)2}2(µ-O)] Piero Leoni, Marco Pasquali, Liana Salsini, Cristina di Bugno, Dario Braga and Piera Sabatino, pp 155 DOI:10.1039/DT9890000155

Synthesis and stereochemical studies of 3-allyl palladium(II) complexes containing a chiral chelating ligand Edoardo Cesarotti, Mariella Grassi and Laura Prati, pp 161 DOI:10.1039/DT9890000161

Synthesis and reactivity of binuclear homo- or hetero-metallic complexes [NBu4]2[MM(µ-C6F5)2(C6F5)4](M = M= Pd or Pt; M = Pt, M= Pd) with bridging pentafluorophenyl groups Rafael Usón, Juan Forniés, Milagros Tomás, Jose M. Casas and Rafael Navarro, pp 169 DOI:10.1039/DT9890000169

The unusual co-ordination ability of vasopressin-like peptides; potentiometric and spectroscopic studies of some copper(II) and nickel(II) complexes Henryk Kozlowski, Barbara Radomska, Gotfryd Kupryszewski, Bernard Lammek, Cynara Livera, Leslie D. Pettit and Simon Pyburn, pp 173 DOI:10.1039/DT9890000173

Metal complexes (Co3+, Fe3+, Mn3+) of the quinquedentate salen analogue, 2-methyl-4-benzylthio-N,N-butane-1,2-diylbis(salicylideneimine): crystal structures and sulphur co-ordination effects Munetoshi Tomita, Naohide Matsumoto, Hisako Akagi, Hisashi kawa and Sigeo Kida, pp 179 DOI:10.1039/DT9890000179

Highly polydentate ligands. Part 4. Crystal structures of neodymium(III) and erbium(III) complexes of 3,12-bis(carboxymethyl)-6,9-dioxa-3,12-diazatetradecanedioate(4-) Cynthia K. Schauer and Oren P. Anderson, pp 185 DOI:10.1039/DT9890000185

Notes. Ruthenium phthalocyanine chemistry: synthesis and properties of a mixed-valence nitrido-bridged ruthenium phthalocyanine dimer Gentilina Rossi, Marcello Gardini, Giovanna Pennesi, Claudio Ercolani and Virgil L. Goedken, pp 193 DOI:10.1039/DT9890000193

Refereeing procedure and policy (1989) J. Chem. Soc., Dalton Trans. DOI:10.1039/DT989000xxiv

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX003

Issue 2

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX005

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP005

The copper(II) promoted hydrolysis of benzylpenicillin. Evidence for the participation of a Cu-OH species in the hydrolysis of the -lactam ring Robert W. Hay, Arup K. Basak, Mahesh P. Pujari and Angelo Perotti, pp 197 DOI:10.1039/DT9890000197

The nature of a sodium-crown interaction studied by sodium-23 nuclear magnetic resonance and by crystal structure determination of a complex with co-ordinated solvent Joyce C. Lockhart, Martin B. McDonnell, William Clegg, M. N. Stuart Hill and Martin Todd, pp 203 DOI:10.1039/DT9890000203

Palladium complexes with the tripodal phosphine tris-(2-diphenylphosphinoethyl)amine. Synthesis and structure of trigonal, tetrahedral, trigonal bipyramidal, and square planar complexes Franco Cecconi, Carlo A. Ghilardi, Stefano Midollini, Simonetta Moneti, Annabella Orlandini and Giancarlo Scapacci, pp 211 DOI:10.1039/DT9890000211

Kinetics and mechanism of the reaction between 4-t-butylphenolate anion and tetrahydroxoargentate(III) in aqueous alkaline media Rama K. Panda and Louis J. Kirschenbaum, pp 217 DOI:10.1039/DT9890000217

The structure of PO(OPF2)3 in the gaseous and crystalline phases David W. H. Rankin, Alexander J. Blake, Martin J. Davis, E. A. V. Ebsworth and Alan J. Welch, pp 223 DOI:10.1039/DT9890000223

Stabilisation of trivalent nickel through 1 : 2 co-ordination by cyclic terdentate ligands CH2CH2NH(CH2)2NH(CH2)2X (X = NH, O, or S) Luigi Fabbrizzi and Davide M. Proserpio, pp 229 DOI:10.1039/DT9890000229

Correlations between nuclear magnetic resonance spectra and crystal structures. A carbon-13 nuclear magnetic resonance study in the solid state of the Group 15 xanthates [A(S2COR)3](A = AsIII, SbIII, or BiIII; R = Me, Et, or Pri) Andrea M. Hounslow, Stephen F. Lincoln and Edward R. T. Tiekink, pp 233 DOI:10.1039/DT9890000233

Crystal structure and magnetic properties of 1 -aqua-µ-hydroxo-1,2,2- tris(perchlorato)-1,2-bis(2,2;6,2-terpyridine)dicopper(II) José V. Folgado, Eugenio Coronado, Daniel Beltrán-Porter, Teófilo Rojo and Amparo Fuertes, pp 237 DOI:10.1039/DT9890000237

Redox activation of the hexanuclear ruthenium cluster [Ru6C(CO)16]2- using oxidative addition Simon R. Drake, Brian F. G. Johnson and Jack Lewis, pp 243 DOI:10.1039/DT9890000243

Synthesis and structural studies on silver-tin complex salts with bis(diphenylarsino)methane and bis(diphenylphosphino)methanet Doriano Franzoni, Giancarlo Pelizzi, Giovanni Predieri, Pieralberto Tarasconi, Francesca Vitali and Corrado Pelizzi, pp 247 DOI:10.1039/DT9890000247

The co-ordination chemistry of divalent cobalt, nickel, and copper. Part 13. Characterization and stability constants of copper(II) species isolated from mixed-ligand solutions; crystal structure of the complex (pyridine-2,6-dicarboxylato)(N,N,N,N-tetramethyl-1,3-diaminopropane)copper(II) Jan G. H. du Preez and Bernardus J. A. M. van Brecht, pp 253 DOI:10.1039/DT9890000253

Metallacyclic complexes. Part 2. Synthesis of metallathietane-3,3-dioxide complexes of platinum(II) and palladium(II); the crystal structures of [Pt{CH(COPh)S(O)2CH(COPh)}(PPh3)2]·2CH2CI2 and [Pd{CH(COPh)S(O)2CH(COPh)}(PMePh2)2]·CH2Cl2·H2O William Henderson, Raymond D. W. Kemmitt, Lesley J. S. Prouse and David R. Russell, pp 259 DOI:10.1039/DT9890000259

A reinvestigation of the structures of organotin sulphates and chromates, including the crystal and molecular structure of bis(trimethyltin) sulphate dihydrate Kieran C. Molloy, Kieran Quill, Desmond Cunningham, Patrick McArdle and Tim Higgins, pp 267 DOI:10.1039/DT9890000267

Oxygen-17 nuclear magnetic resonance spectroscopic studies of aqueous alkaline silicate solutions Christopher T. G. Knight, Arthur R. Thompson, Ajit C. Kunwar, Herbert S. Gutowsky, Eric Oldfield and R.James Kirkpatrick, pp 275 DOI:10.1039/DT9890000275

Reduction-oxidation properties of organotransition-metal complexes. Part 29. Pentaphenylcyclopentadienyl complexes of ruthenium Neil G. Connelly and Ian Manners, pp 283 DOI:10.1039/DT9890000283

Synthesis, infrared, and tin-119 Mössbauer spectroscopic characterization of seven-co-ordinate diorganotin(IV) adducts with 2,6-diacetylpyridine acylhydrazones, including the X-ray crystal structure of SnEt2(dapt)[H2dapt = 2,6-diacetylpyridine bis(2-thenoylhydrazone)] Clara Carini, Giancarlo Pelizzi, Pieralberto Tarasconi, Corrado Pelizzi, Kieran C. Molloy and Philip C. Waterfield, pp 289 DOI:10.1039/DT9890000289

Reactions of the bis(alkyne) complexes [Wi2(CO)(NCMe)(2-RC2R)2](R = Me or Ph) with mono- and bi-dentate phosphine-donor ligands and the X-ray crystal structure of [Wl2(CO){Ph2P(CH2)PPh2}(2-MeC2Me)] Elaine M. Armstrong, Paul K. Baker, Mary E. Harman and Michael B. Hursthouse, pp 295 DOI:10.1039/DT9890000295

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 84. Carbaborane tungsten-platinum complexes having a µ-CC6H3Me2-2,6 ligand; crystal structures of [WPt(µ-CC6H3Me2-2,6)(CO)n(PEt3)(µ-:5-C2B9H8Me2)](n= 2 or 3) David D. Devore, Judith A. K. Howard, John C. Jeffery, Massimino U. Pilotti and F. Gordon A. Stone, pp 303 DOI:10.1039/DT9890000303

Spectroscopic studies on matrix isolated tungsten chlorides and bromides Alan K. Brisdon, Eric G. Hope, William Levason and J. Steven Ogden, pp 313 DOI:10.1039/DT9890000313

Novel five-co-ordinate diorganorhodium compounds. X-ray structure of bis-ortho-chelated [RhIII(Me)I{C6H3(CH2NMe2)2-2,6}] Adolphus A. H. van der Zeijden, Gerard van Koten, Jan Meine Ernsting, Cornelis J. Elsevier, Bert Krijnen and Casper H. Stam, pp 317 DOI:10.1039/DT9890000317

The nickel(II)-bromide system in dimethyl sulphoxide: a detailed study of the influences of temperature and mole ratio Trevor R. Griffiths and Nicolas J. Phillips, pp 325 DOI:10.1039/DT9890000325

A comparison of the rates of intramolecular hydrogen migration in the molecules [Mo(-C7H8)2]n+ to give [Mo(-C7H7)(-C7H9)]n+, n= 0 or 1: crystal structures of [Mo(-C7H8)2], [Mo(-C7H7)(-C7H9)], and [Mo(-C7H8)2][BF4] Malcolm L. H. Green, Paul A. Newman and Judith A. Bandy, pp 331 DOI:10.1039/DT9890000331

Chemistry of metallacyclobutanones (3-oxodimethylenemethane complexes). Part 5. Ligand substitution reactions of metallacyclobutan-3-ones of platinum(II) and palladium(II) with tertiary phosphines and t-butyl isocyanide; crystal structures of [Pt{CH(CO2Me)COCH(CO2Me)}(CNBut)(AsPh3)] and [Pt{CH(CO2Me)CO(CO2Me)C(NHBut)}(CNBut)2] Raymond D. W. Kemmitt, Peter McKenna, David R. Russell and Lesley J. S. Prouse, pp 345 DOI:10.1039/DT9890000345

Kinetic studies of the oxidation reaction of arsenic(III) to arsenic(V) by peroxodisulphate ion in aqueous alkaline media Suzuko Nishida and Masaru Kimura, pp 357 DOI:10.1039/DT9890000357

Thiosemicarbazones as co-ordinating agents. Part 3. Synthesis, spectroscopic characterization, and X-ray structure of methyl pyruvate thiosemicarbazone hemihydrate, chloro(ethyl pyruvate thiosemicarbazonato)copper(II)(green form), and chloro(pyruvic acid thiosemicarbazonato)copper(II) dihydrate (blue form) Marisa Belicchi Ferrari, Giovanna Gasparri Fava and Pieralberto Tarasconi, pp 361 DOI:10.1039/DT9890000361

Thermodynamic and electrochemical behaviour of lanthanide cryptates in N,N-dimethylformamide Isabelle Marolleau, Jean-Paul Gisselbrecht, Maurice Gross, Françoise Arnaud-Neu and Marie-José Schwing-Weill, pp 367 DOI:10.1039/DT9890000367

Notes. Ligand additivity in the oxidation potentials of bidentate mixed-ligand ruthenium(II) complexes Masa-aki Haga, Takeko Matsumura-Inoue, Kunio Shimizu and Gen P. Satô, pp 371 DOI:10.1039/DT9890000371

The reaction of hydroxo-species of palladium(II) with bidentate nucleophiles Giuseppe Alibrandi, Matteo Cusumano, Antonino Giannetto and Domenico Minniti, pp 375 DOI:10.1039/DT9890000375

Syntheses and dynamic stereochemistry of methyl-and phenyl-carbonyl heterobinuclear metal-metal bonded complexes Montserrat Ferrer, Oriol Rossell, Miquel Seco and Pierre Braunstein, pp 379 DOI:10.1039/DT9890000379

Additions and corrections J. Chem. Soc., Dalton Trans. DOI:10.1039/DT9890000383

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX007

Issue 3

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX009

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP009

A kinetic study of the gas-phase thermolysis of pentaborane(11) Martin D. Attwood, Robert Greatrex and Norman N. Greenwood, pp 385 DOI:10.1039/DT9890000385

Influence of added hydrogen on the kinetics and mechanism of thermal decomposition of tetraborane(10) and of pentaborane(11) in the gas phase Martin D. Attwood, Robert Greatrex and Norman N. Greenwood, pp 391 DOI:10.1039/DT9890000391

The hydrolysis of metal ions. Part 11. The ionic strength dependence of gallium(III) Paul L. Brown, pp 399 DOI:10.1039/DT9890000399

Preparation and interconversion of dimeric di-µ-hydroxo and tri-µ-hydroxo complexes of platinum(II) and palladium(II) with 2,2-bipyridine and 1,10-phenanthroline Smita Wimmer, Paule Castan, Franz L. Wimmer and Neil P. Johnson, pp 403 DOI:10.1039/DT9890000403

Synthesis and spectroscopic characterisation of [MoO(SR)4]-(R = C6H5, C10H7, 4-CH3C6H4, 4-ClC6H4, 3-ClC6H4, 4-FC6H4, 2,6-Cl2C6H3, or C6F5) complexes and [MoO(SC6F5)4]2- S. Richard Ellis, David Collison and C. David Garner, pp 413 DOI:10.1039/DT9890000413

Thiolate complexes of osmium(III) with tertiary phosphines and their dicarbonyl derivatives of osmium(II): X-ray crystal structure of trans,trans,trans-[Os(SC6F5)2(CO)2(PEt2Ph)2] Diana Cruz-Garritz, Plinio Sosa, Hugo Torrens, Adrian Hills, David L. Hughes and Raymond L. Richards, pp 419 DOI:10.1039/DT9890000419

Mechanistic studies on hydrazido(2-)-complexes. Cleavage of the nitrogen-nitrogen bond in the reaction of [Mo{NN(CH2)4CH2}(Ph2PCH2CH2PPh2)2] with acid Richard A. Henderson, G. Jeffery Leigh and Christopher J. Pickett, pp 425 DOI:10.1039/DT9890000425

Chromium chalcogen complexes. Insertion of elemental sulphur into [{Cr(cp)(CO)2}2Se] and [Cr(cp)2(CO)4Se2](cp =-C5H5) Lai Yoong Goh, pp 431 DOI:10.1039/DT9890000431

One-electron transfer processes in the reaction of tin(II) halides with substituted o-quinones; crystal structure of bis(3,5-di-t-butylcatecholato)tin-1,10-phenanthroline-dimethylformamide (1/1/2) Theodore A. Annan, Bruce R. McGarvey, Andrzej Ozarowski, Dennis G. Tuck and Raj K. Chadha, pp 439 DOI:10.1039/DT9890000439

Tris(trimethylsilyl)methyl and tris(dimethylphenylsilyl)methyl derivatives of boron. Crystal structures of dihydroxy[tris(trimethylsilyl)methyl]borane and of the lithium-boron complex [(MeOH)2Li(µ-OMe)2B(OMe)2] Salih S. Al-Juaid, Cohn Eaborn, Mohamed N. A. El-Kheli, Peter B. Hitchcock, Paul D. Lickiss, M. Elias Molla, J. David Smith and Jalal A. Zora, pp 447 DOI:10.1039/DT9890000447

Co-ordination chemistry of higher oxidation states. Part 29. Cobalt(III) complexes of bi- and tetra-thioethers: synthesis, properties, and cobalt-59 nuclear magnetic resonance data Julian J. Jenkinson, William Levason, Richard J. Perry and Mark D. Spicer, pp 453 DOI:10.1039/DT9890000453

A kinetic and mechanistic study of the solvolysis of aryitellurium trihalides in organic solvents Neil K. Adlington, J. David Miller and Tahir A. Tahir, pp 457 DOI:10.1039/DT9890000457

Oxidation of silver metal and silver(I) cations by molybdenum, tungsten, and uranium hexafluorides and by the nitrosonium cation in acetonitrile. Preparation and properties of silver(III) hexafluorometalates(V) Javed Iqbal, David W. A. Sharp and John M. Winfield, pp 461 DOI:10.1039/DT9890000461

Alkyne insertion into ruthenium-carbon bonds: formation and ring-closing reactions of vinyl complexes Joseph R. Crook, Barbara Chamberlain and Roger J. Mawby, pp 465 DOI:10.1039/DT9890000465

Actinide structural studies. Part 17. The crystal and molecular structures of four uranyl(VI) complexes with N,N-dialkyldithiocarbamate ligands Nathaniel W. Alcock and Mark Pennington, pp 471 DOI:10.1039/DT9890000471

Metal cluster-induced electrophilicity of arenes Mark A. Gallop, Brian F. G. Johnson, Jack Lewis and Anthony H. Wright, pp 481 DOI:10.1039/DT9890000481

Hydrogen production from ethanol catalysed by Group 8 metal complexes David Morton, David J. Cole-Hamilton, Imelda D. Utuk, Marguerita Paneque-Sosa and Manuel Lopez-Poveda, pp 489 DOI:10.1039/DT9890000489

Synthesis of sulphimide complexes of palladium and platinum. Crystal and molecular structure of cis-dichloro[S,S-dimethyl-N-(2-pyrimidinyl)sulphimide](triphenyiphosphine)pailadium(II) Jack L. Davidson, Peter N. Preston, Sally A. R. Spankie, Graeme Douglas and Kenneth W. Muir, pp 497 DOI:10.1039/DT9890000497

Polyhedral rearrangements in undeca- and dodeca-nuclear Group 1B metal osmium clusters Simon R. Drake, Brian F. G. Johnson and Jack Lewis, pp 505 DOI:10.1039/DT9890000505

Reactions of co-ordinated ligands. Part 44. The reactivity of the carbyne complex [Mo(CCH2But){P(OMe)3}2(-C5H5)] towards protonic acids, diphenylphosphine, and the -acid tetracyanoethylene; formation and crystal structures of [MoH(CCH2But){P(OMe)3}2(-C5H5)][BF4], [Mo{-OC(O)CF3}{2-HOC(O)CF3}{P(OMe)3}2(-C5H5)], and [Mo(CCH2But){2-C2(CN)4}{P(OMe)3}{-C5H5)] Martin Bottrill, Michael Green, A. Guy Orpen, David R. Saunders and Ian D. Williams, pp 511 DOI:10.1039/DT9890000511

The binding of trialkyltin(IV) moieties to rat haemoglobin, and the structure of model systems, studied by tin-119 Mössbauer spectroscopy Renato Barbieri, Arturo Silvestri, M. Teresa Lo Giudice, Giuseppe Ruisi and M. Teresa Musmeci, pp 519 DOI:10.1039/DT9890000519

Stoicheiometric and nitrogen-15 labelling studies on the hyponitrous acid-nitrous acid reaction Francis T. Bonner, Caroline E. Donald and Martin N. Hughes, pp 527 DOI:10.1039/DT9890000527

The kinetics and mechanism of the hyponitrous acid-nitrous acid reaction at 0 °C Martin N. Hughes, Peter E. Wimbledon and Geoffrey Stedman, pp 533 DOI:10.1039/DT9890000533

Gold-197 Mössbauer spectra and the bonding of some gold-gold and gold-platinum clusters R. V. (Dick) Parish, Laila S. Moore, Annick J. J. Dens, D. Michael P. Mingos and Darren J. Sherman, pp 539 DOI:10.1039/DT9890000539

The molecular structures of gaseous tetrafluorohydridophosphorane, HPF4, and trifluorodihydridophosphorane, H2PF3, as determined by electron diffraction Anthony J. Downs, G. Sean McGrady, Elizabeth A. Barnfield and David W. H. Rankin, pp 545 DOI:10.1039/DT9890000545

Notes. Reaction of elemental sulphur with (5H,14H-6,8,15,17-tetramenthyldibenzo [b,i][1,4,8,11]tetra-azacyclotetradecinato)iron(II):synthesis and X-ray structure of a µ-sulphido iron (III) complex Pietro Berno, Carlo Floriani, Angiola Chiesi-Villa and Carlo Guastini, pp 551 DOI:10.1039/DT9890000551

Additions and corrections Aditya P. Koley, Sanchita Purohit, Saktiprovad Ghosh, Lakanaju Sreeramachandra Prasad, Periakaruppan T. Manoharan, Saktiprosad Ghosh and Lakkaraju Sreeramachandra Prasad, pp 555 DOI:10.1039/DT9890000555

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX011

Issue 4

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX013

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP013

Oxidation of a Pt2(µ-SO2) moiety to µ-SO3 and the crystal structure of [Pt2(µ-SO3)(µ-SO2)(C8H12)2] David H. Farrar and Ravi R. Gukathasan, pp 557 DOI:10.1039/DT9890000557

Addition of anilines to the [Fe(CO)3(1-5--C7H9)]BF4 complex, and the Ordered Transition State Mechanism Timothy I. Odiaka, pp 561 DOI:10.1039/DT9890000561

Interligand interaction in mixed amino acid complexes Vadaparti Manjula and Pabitra K. Bhattacharya, pp 567 DOI:10.1039/DT9890000567

Spectrophotometric study of complex formation in copper(II) mono-, di-, and tri-ethanolamine systems Enric Casassas, L'o Luis Gustems and Romà Tauler, pp 569 DOI:10.1039/DT9890000569

Potentiometric and electron spin resonance investigation on the interactions between adenosine 5-triphosphate (atp) and triphosphate ligands with vanadyl ion. Synthesis and characterization of solid vanadyl-atp compounds from acidic aqueous solution Renzo Cini, Gianluca Giorgi, Franco Laschi, Michal Sabat, Antonio Sabatini and Alberto Vacca, pp 575 DOI:10.1039/DT9890000575

Syntheses, electrochemistry, and spectroscopy of dirhodium(II) tetra-acetamidate and tetrakis(trifluoroacetamide) complexes with axial Group 15 substituents. The X-ray crystal structures of [Rh2(CH3CONH)4(AsPh3)2] and [Rh2(CH3CONH)4 -n(CH3CO2)n(MPh3)2], M = As or Sb, n 1 Stephen P. Best, Peter Chandley, Robin J. H. Clark, Simon McCarthy, Michael B. Hursthouse and Paul A. Bates, pp 581 DOI:10.1039/DT9890000581

Reactions of hydride complexes of ruthenium(II) with alkynes Joanne M. Bray and Roger J. Mawby, pp 589 DOI:10.1039/DT9890000589

Lewis-base adducts of lead(II) compounds. Part 4. Novel isomeric dimers of lead(II) thiocyanate-1 10-phenanthroline(1/2). Crystal structure determinations Lutz M. Engelhardt, Brenda M. Furphy, Jack McB. Harrowfield, Jennifer M. Patrick, Brian W. Skelton and Allan H. White, pp 595 DOI:10.1039/DT9890000595

Chemistry of multi-site bound unsaturated ligands on metal carbonyl clusters. Intramolecular reductive coupling in the conversion of [Ru3(µ-H)(CO)9(µ3,2-CCBut)] to the butadienyl cluster [Ru3(CO)8{µ3,4C(But)CC(H)C(Ph)(PPh2)}], and its crystal structure. An example of ligand isomerism on metal clusters Enrico Sappa, Gianfranco Pasquinelli, Antonio Tiripicchio and Marisa Tiripicchio Camellini, pp 601 DOI:10.1039/DT9890000601

Carbonyl, hydridocarbonyl, and hydridoalkoxycarbonyl complexes of iridium with phosphorus-sulphur hybrid ligands, and the crystal and molecular structure of [IrH(CO2Me)(Ph2PCH2CH2SEt)2]BPh4 Alessandro Del Zotto, Antonio Mezzetti, Giuliano Dolcetti, Pierluigi Rigo and Nevenka Bresciani Pahor, pp 607 DOI:10.1039/DT9890000607

Crystallographic and nuclear magnetic resonance studies of carbonyl(3-methylallyl)(trichlorostannyl) complexes of platinum(II) and palladium(II) Maria Grassi, Stefano V. Meille, Alfredo Musco, Roberto Pontellini and Angelo Sironi, pp 615 DOI:10.1039/DT9890000615

Preparation of the bis(trimethylsilyl)amido lanthanide chlorides [{Ln[N(SiMe3)2]2(µ-Cl)(thf)}2](thf = tetrahydrofuran), and the crystal and molecular structures of the gadolinium and ytterbium complexes Helen C. Aspinall, Donald C. Bradley, Michael B. Hursthouse, Keith D. Sales, Nigel P. C. Walker and Bilquis Hussain, pp 623 DOI:10.1039/DT9890000623

Chemistry of subvalent main group metals with dithiolates. Part 2. X-Ray structural, thermal, and theoretical investigations on the novel one-dimensional stacking structure K2[Pb{S2CC(CN)2}2]·2H2O Hans-Ulrich Hummel and Hermann Meske, pp 627 DOI:10.1039/DT9890000627

Structural and motional study of pyridinium tetrahalogenoantimonates(III) by means of nuclear quadrupole resonance spectroscopy Tsutomu Okuda, Yukiko Aihara, Nobuhiko Tanaka, Koji Yamada and Sumio Ichiba, pp 631 DOI:10.1039/DT9890000631

Studies on olefin-co-ordinating transition-metal carbene complexes. Part 14. An unusual reaction of tricarbonyl(4-cyclopenta-1,3-diene)iron: a new approach to acyldicarbonyl(-cyclopentadienyl)iron complexes, and the X-ray crystal structure of [Fe(COC6H4CF3-p)(-C5H5)(CO)2] Jiabi Chen, Jianguo Yin, Guixin Lei, Yongyin Wang and Guangda Lin, pp 635 DOI:10.1039/DT9890000635

Synthesis of diphenylphosphido-bridged manganese-gold complexes. Crystal structures of [N(PPh3)2][Au2Mn(µ-PPh2)2(CO)4(C6F5)2] and [Au2Mn2(µ-PPh2)4(CO)8] Gabino A. Carriedo, Victor Riera, M. L. Rodríguez, Peter G. Jones and Jürgen Lautner, pp 639 DOI:10.1039/DT9890000639

Base-catalysed aquation of -syn- and -anti-chloro- and bromo-[1,9-bis(2-pyridyl)-2,5,8-triazanonane]- and -[1,11-bis(2-pyridyl)-2,6,10-triazaundecane]-cobalt(III) cations. An unusually base-sensitive halogenopentamine cobalt(III) system Etmina Ahmed, Chinmay Chatterjee, Christopher J. Cooksey, Martin L. Tobe, Glyn Williams and Madalena Humanes, pp 645 DOI:10.1039/DT9890000645

Spectrophotometric and calorimetric studies on the formation of binary (2,2-bipyridine) nickel(II) and ternary (2,2-bipyridine) chloronickel(II) complexes in N,N-dimethylformamide Shin-ichi Ishiguro, Kazuhiko Ozutsumi, László Nagy and Hitoshi Ohtaki, pp 655 DOI:10.1039/DT9890000655

Photochemical studies of alkylammonium molybdates. Part 8. Location of protons interacting with the paramagnetic electron in a single crystal of photoirradiated [NH3Pri]6[Mo8O26(OH)2]·2H2O Toshihiro Yamase and Masanobu Suga, pp 661 DOI:10.1039/DT9890000661

Synthesis, characterization, and crystal structures of bismuth complexes with 2,6-diacetylpyridine bis(2-thenoylhydrazone)(H2dapt): [Bi(Hdapt)Cl2]·dmso·H2O and [Bi(dapt)Cl]·dmso, containing a quinquedentate ligand Luigi P. Battaglia, Anna Bonamartini Corradi, Giorgio Pelosi, Pieralberto Tarasconi and Corrado Pelizzi, pp 671 DOI:10.1039/DT9890000671

Tri(-cyclopentadienyl)uranium(IV) silyl and siloxide compounds. Crystal structure of [U(5-C5H5)3(OSiPh3)]. Insertion of lsocyanide into a uranium-silicon bond Marina Porchia, Nicola Brianese, Umberto Casellato, Franco Ossola, Gilberto Rossetto, Pierino Zanella and Rodolfo Graziani, pp 677 DOI:10.1039/DT9890000677

The chemical and electrochemical one-electron oxidation of diamidonaphthalene-bridged complexes; paramagnetic [Rh2]3+-containing A-frames Neil G. Connelly, Andrew C. Loyns, Maria J. Fernandez, Javier Modrego and Luis A. Oro, pp 683 DOI:10.1039/DT9890000683

Trinuclear mixed-valence complexes with the linear [Rh3]4+ core Neil G. Connelly, Andrew C. Loyns, Miguel A. Ciriano, Maria J. Fernandez, Luis A. Oro and B. Eva Villarroya, pp 689 DOI:10.1039/DT9890000689

Synthesis, structure, and chemical reactivity of a stable C5Me5-substituted phosphanylium ion: (pentamethylcyclopentadienyl)(t-butylamino)phosphanylium tetrachloroaluminate Dietrich Gudat, Martin Nieger and Edgar Niecke, pp 693 DOI:10.1039/DT9890000693

A dynamic nuclear magnetic resonance study of trimethylplatinum(IV) halide complexes of 1,1,2,2-tetrakis(methylthio)ethane. Part 1. Low-temperature solution properties, and X-ray crystal structure of [PtlMe3{(MeS)2CHCH(SMe)2}] Edward W. Abel, Timothy P. J. Coston, Kevin M. Higgins, Keith G. Orrell, Vladimir ik and T. Stanley Cameron, pp 701 DOI:10.1039/DT9890000701

A dynamic nuclear magnetic resonance study of trimethylplatinum(IV) halide complexes of 1,1,2,2- tetrakis(methylthio)ethane. Part 2. High-temperature fluxionality Edward W. Abel, Timothy P. J. Coston, Keith G. Orrell and Vladimir ik, pp 711 DOI:10.1039/DT9890000711

Tetrathiafulvalenium salts of planar PtII, PdII, and CuII 1,2-dithio-oxalato-S,S anions. Synthesis, chemistry and molecular structures of bis(tetrathiafulvalenium) bis(1,2-dithio-oxalato-S,S)palladate(II), [ttf]2[Pd(S2C2O2)2], and of bis(tetrathiafulvalenium)tetrathiafulvalene bis(1,2-dithio-oxalato-S,S)platinate(II), [ttf]3[Pt(S2C2O2)2] Carlo Bellitto, Mario Bonamico, Vincenzo Fares, Patrizia Imperatori and Salvatore Patrizio, pp 719 DOI:10.1039/DT9890000719

Formation in solution, synthesis, and electrochemical study of oxalato complexes of N,N-ethylenebis(salicylideneiminato)-chromium(III) and -iron(III): crystal structures of piperidinium [N,N-ethylenebis(salicylideneiminato)](oxalato-O1O2)-chromate(III) and ferrate(III) Francesc Lloret, Miguel Julve, Miquel Mollar, Isabel Castro, Julio Latorre, Juan Faus, Xavier Solans and Irène Morgenstern-Badarau, pp 729 DOI:10.1039/DT9890000729

Solvent influence on trifluoromethylation reactions with Cd(CF3)2: one-pot synthesis of trifluoromethyl iron complexes Wolfgang Dukat and Dieter Naumann, pp 739 DOI:10.1039/DT9890000739

Notes. Synthesis and X-ray crystal structure of [Rh(NO)(PPh3)2(p-MeC6H4NNNC6H4Me-p)][BF4]·CH2Cl2 Carmen Carriedo, Neil G. Connelly, Ralph Hettrich, A. Guy Orpen and Jonathan M. White, pp 745 DOI:10.1039/DT9890000745

Synthesis and X-ray crystal structure of chloro[2(1H)-pyridinethione-S]-bis(triphenylphosphine)copper(I) Tarlok S. Lobana, Paramjit K. Bhatia and Edward R. T. Tiekink, pp 749 DOI:10.1039/DT9890000749

Crystal structure of a novel tetranuclear dithiocarboxylato copper(I) complex, [{Cu(S2CC6H4Me-p)}4(PPh3)2] Anna Maria Manotti Lanfredi, Antonio Tiripicchio, Annamaria Camus and Nazario Marsich, pp 753 DOI:10.1039/DT9890000753

Solid-state structure and solution conformation of 2,2,4,4,6,6,-hexa-(p-chlorophenoxo)cyclotri-5-phosphazatriene. X-Ray and dipole moment studies Giuliano Bandoli, Umberto Casellato, Mario Gleria, Antonio Grassi, Enzo Montoneri and Giuseppe C. Pappalardo, pp 757 DOI:10.1039/DT9890000757

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX015

Issue 5

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX017

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP017

Preparation of (chloromethyl)palladium(II) derivatives from complexes of palladium dichloride by reaction with diazomethane or bis(chloromethyl)mercury Robert McCrindle, Gilles J. Arsenault, Rajeev Farwaha, Alan J. McAlees and David W. Sneddon, pp 761 DOI:10.1039/DT9890000761

A kinetic study of the transmission of ligand effects across the quadruple bond in [Re2Cl8]2- Joseph Ferry, Patrick McArdle and Michael J. Hynes, pp 767 DOI:10.1039/DT9890000767

Thermodynamics of hydroxo complex formation of dialkyltin(IV) ions in aqueous solution Giuseppe Arena, Roberto Purrello, Enrico Rizzarelli, Antonio Gianguzza and Lorenzo Pellerito, pp 773 DOI:10.1039/DT9890000773

Isopropyldisilylamine and disilyl-t-butylamine: preparation, spectroscopic properties, and molecular structure in the gas phase, determined by electron diffraction David G. Anderson and David W. H. Rankin, pp 779 DOI:10.1039/DT9890000779

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 85. Synthesis of chain and ring compounds containing molybdenum Simon J. Davies and F. Gordon A. Stone, pp 785 DOI:10.1039/DT9890000785

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 86. Aikylidyne(carbaborane)molybdenum-gold, -rhodium and -iron complexes; crystal structure of [NEt4][MoFe2(µ3-CC6H4Me-4)(µ- : : 5C2B9H7Me2)(CO)8] David D. Devore, Christiane Emmerich, Judith A. K. Howard and F. Gordon A. Stone, pp 797 DOI:10.1039/DT9890000797

Solid-state phosphorus-31 nuclear magnetic resonance spectroscopy of phosphorus sulphides Robin K. Harris, Philip J. Wilkes, Paul T. Wood and J. Derek Woollins, pp 809 DOI:10.1039/DT9890000809

Binuclear platinum(II) complexes bridged by pyridine-2-thiolate and related ligands. Synthesis and crystal structure Keisuke Umakoshi, Isamu Kinoshita, Yuko Fukui-Yasuba, Keiji Matsumoto, Shun'ichiro Ooi, Hiroshi Nakai and Motoo Shiro, pp 815 DOI:10.1039/DT9890000815

Reactions of amine hydrochlorides with phosphorus trichloride oxide; preparation and X-ray crystal structure of 2,4,6-trichloro-1,3,5-triphenyl-1,3,5,25,45,65-triazatriphosphorinane 2,4,6-trioxide (PhNPOCl)3 Owen Johnson, Martin Murray and Gary Woodward, pp 821 DOI:10.1039/DT9890000821

Lamellar inorganic ion exchangers. Hydrogen-lithium ion exchange in -titanium phosphate Eliana González, Ricardo Llavona, José R. García and Julio Rodríguez, pp 829 DOI:10.1039/DT9890000829

Tri-aza analogue of an acetylacetonato-complex formed by nucleophilic attack of a co-ordinated nitrile by amidines. X-Ray crystal structure of [Pt{HNC(Ph)NC(Ph)NH}2]·PhMe James Barker, Melvyn Kilner, Mouayed M. Mahmoud and Stephen C. Wallwork, pp 837 DOI:10.1039/DT9890000837

High-resolution solid-state tin-119 nuclear magnetic resonance spectroscopy of ternary tin oxides Nigel J. Clayden, Christopher M. Dobson and Adrian Fern, pp 843 DOI:10.1039/DT9890000843

Catalytic oxidation of water mediated by rhenium oxides América Faria, Sergio Hernández and Enrique Román, pp 849 DOI:10.1039/DT9890000849

Kinetics of aquation and base hydrolysis of some trans-[Co(tn)2(B)Cl]n+(tn = 1,3-diaminopropane; B = OH, NCS, N3, NO2, NH3, or CN) complexes. The effect of ring size on reactivity Donald A. House and Martin L. Tobe, pp 853 DOI:10.1039/DT9890000853

Gas-phase molecular structure of NN-bis(trimethylsilyl)sulphur di-imide, determined by electron diffraction David G. Anderson, Heather E. Robertson, D. W. H. Rankin and J. Derek Woollins, pp 859 DOI:10.1039/DT9890000859

Bimetallic compounds of trans-cyclohexane-1,2-diamine-NNNN-tetra-acetate (cdta). Part 3. Structural and magnetic characterization of the dinuclear [M(OH2)5][M(cdta)]·H2O (M,M= Ni,Ni; Mn,Ni; Mn,Cu; Co,Ni; or Co,Cu) and the tetranuclear [M(OH2)4][M(cdta)(OH2)]·4H2O (M,M= Zn,Zn; Zn-Co; Co,Co; or Mn,Co) complexes Amparo Fuertes, Carlos Miravitlles, Emilio Escrivá, Eugenio Coronado, Daniel Beltrán and Lilyane Padel, pp 863 DOI:10.1039/DT9890000863

Variable-temperature and -pressure proton nuclear magnetic resonance studies of the rates and mechanisms of N,N-dimethylformamide and acetonitrile exchange with the square-pyramidal complexes mono(solvento){3,7,11-tribenzyl-3,7,11,17-tetra-azabicyclo [11.3.1]heptadeca-1(17),13,15-triene}nickel(II) Lee Fielding and Peter Moore, pp 873 DOI:10.1039/DT9890000873

New carbide clusters in the cobalt subgroup. Part 17. Preparation and structural characterization of the mixed-metal octahedral dianion [Co2Rh4C(CO)13]2- as its [PPh4]+ salt Vincenzo G. Albano, Dario Braga, Fabrizia Grepioni, Roberto Della Pergola, Luigi Garlaschelli and Alessandro Fumagalli, pp 879 DOI:10.1039/DT9890000879

Some transition-metal complexes of 1,3,2-dithiarsolane Edward W. Abel, Stephen R. Allen and Bandana Khandelwal, pp 885 DOI:10.1039/DT9890000885

The mechanisms of fluxionality of [Ir4(CO)11(PEt3)]; a reappraisal of the mechanism of carbonyl fluxionality on clusters Brian E. Mann, Barry T. Pickup and Anthony K. Smith, pp 889 DOI:10.1039/DT9890000889

Formation of chromium interlayers in -zirconium phosphate Dugald J. MacLachlan and David M. Bibby, pp 895 DOI:10.1039/DT9890000895

Studies on transition-metal oxo and nitrido complexes. Part 10. New oxo-ruthenium and oxo-osmium pyridine complexes, and use of the former as catalysts for oxidation of alcohols Ahmed M. El-Hendawy, William P. Griffith, Fatma I. Taha and Mahmoud N. Moussa, pp 901 DOI:10.1039/DT9890000901

Gold(I) complexes derived from secondary phosphines: [{Au(µ-PR2)}n],[(AuBr)2(µ-PPh2)]-, [AuX(PHR2)], and [{Au(PHR2)n}]+. Crystal structure of [AuBr(PHPh2)] David B. Dyson, R. V. Parish, Charles A. McAuliffe, Robin G. Pritchard, Roy Fields and Brian Beagley, pp 907 DOI:10.1039/DT9890000907

Crystal structures and solution dynamics of mono- and di-nuclear rhodium complexes of heterodinucleating macrocyclic ligands containing the 2,6-di(thiomethyl)pyridine sub-unit Ian M. Helps, Karen E. Matthes, David Parker and George Ferguson, pp 915 DOI:10.1039/DT9890000915

Reactivity of metallic copper with acidic organic compounds in the presence of molecular oxygen. Crystal structure of [{Cu(NCO)(py)2}2]·H2O Michele Gargano, Nicoletta Ravasio, Michele Rossi, Antonio Tiripicchio and Marisa Tiripicchio Camellini, pp 921 DOI:10.1039/DT9890000921

Crystal structure and mass spectrometry of dibromodimethyl[1-methyl-2(3H)-imidazolinethione-S]tin(IV) Giovanni Valle, Angeles Sánchez González, Umberto Vettori and Renato Ettorre, pp 927 DOI:10.1039/DT9890000927

Synthesis and spectroscopic studies of cobalt(III) complexes of the chiral pendant-arm macrocycle N,N,N-tris[(2S)-2-hydroxypropyl]-1,4,7-triazacyclononane (H3L); crystal structure of the hydrogen-bridged dimer [CoLH3LCo][PF6]3 Arafa A. Belal, Louis J. Farrugia, Robert D. Peacock and John Robb, pp 931 DOI:10.1039/DT9890000931

Radiotracers in fluorine chemistry. Part 12. Reactions between caesium fluoride and arsenic pentafluoride, boron trifluoride, sulphur tetrafluoride, carbonyl fluoride, and carbon dioxide under heterogeneous conditions at room temperature. Radiotracer studies using fluorine-18, sulphur-35, and carbon-14 Kim W. Dixon and John M. Winfield, pp 937 DOI:10.1039/DT9890000937

Synthesis and characterization of imidazolate-bridged iron(III)-copper(II) and manganese(III)-copper(II) binuclear complexes Naohide Matsumoto, Yonezo Maeda, Hisashi Okawa, Toshifumi Akui, Tetsuro Kawaji, Akira Ohyoshi, Masahito Kodera, Hiroki Oshio and Sigeo Kida, pp 943 DOI:10.1039/DT9890000943

Nucleophilic attack of methanol on bis(benzonitrile)dichloroplatinum: formation of mono- and bis-imido ester derivatives Francesco P. Fanizzi, Francesco P. Intini and Giovanni Natile, pp 947 DOI:10.1039/DT9890000947

N,N-ethylenebis(acetylacetoneiminato)titanium complexes: synthesis, crystal structures, and properties of titanium(III) and titanium(IV) derivatives Marinella Mazzanti, Jean-Marie Rosset, Carlo Floriani, Angiola Chiesi-Villa and Carlo Guastini, pp 953 DOI:10.1039/DT9890000953

Reactivity of cationic molybdenum(II) complexes. Part 4. Isolation and crystal structure determination of cis-[Mo(CO)2(-C5Me5)(PPh3)(N3)] and cis-[Mo(CO)2(-C5Me5)(PPh3)(NCO)] Piero Leoni, Marco Pasquali, Dario Braga and Piera Sabatino, pp 959 DOI:10.1039/DT9890000959

Precursor catenand complexes: synthesis, structure, and electrochemistry of bis(2,6-di-iminopyridyl) complexes of nickel(II). The single-crystal X-ray structureof [NiL42][BF4]2 Alexander J. Blake, Aidan J. Lavery, Timothy I. Hyde and Martin Schröder, pp 965 DOI:10.1039/DT9890000965

Lewis base adducts of Group 11 metal(I) complexes. Part 48. Heterobimetallic tris(dithiocarbamato)cobalt(III)-copper(I) halide adducts as a vehicle for novel copper(I) halide clusters (structurally characterized) Peter C. Healy, Brian W. Skelton and Allan H. White, pp 971 DOI:10.1039/DT9890000971

Phosphorus-31 and selenium-77 nuclear magnetic resonance spectra of sulphur- or arsenic-substituted derivatives of tetraphosphorus triselenide; fitting of chemical shifts and coupling constants to molecular parameters for cage compounds containing a phosphorus-selenium-phosphorus linkage Bruce W. Tattershall, Roger Blachnik and Hans Peter Baldus, pp 977 DOI:10.1039/DT9890000977

Platinum metal complexes of potentially chelating alkene-thioether and alkene-selenoether ligands: synthesis and dynamic nuclear magnetic resonance study of [MX2{MeE(CH2)nCHCH2}](M = Pt or Pd; X = Cl, Br, or I; E = S or Se; n= 2 or 3) and the X-ray structure of cis-dibromo(2-thia-6-heptene)platinum(II), [PtBr2{{MeS(CH2)3CHCH2}] Edward W. Abel, David G. Evans, Julian R. Koe, Vladimir Sik, Paul A. Bates and Michael B. Hursthouse, pp 985 DOI:10.1039/DT9890000985

Monocyclopentadienyl pentafluorothiophenolate complexes of molybdenum and their interactions with thallium(I) ions; dynamic nuclear magnetic resonance studies and crystal and molecular structures of [TlMo(SC6F5)2L2(cp)](L = CO or SC6F5; cp =5-C5H5) W. A. Wan Abu Bakar, Jack L. Davidson, W. Edward Lindsell, Kevin J. McCullough and Kenneth W. Muir, pp 991 DOI:10.1039/DT9890000991

Notes. Electronic spectral study of the aqua hydroxo equilibrium of model iron(III) haems encapsulated in aqueous detergent micelles Shyamalava Mazumdar, Okhil K. Medhi, Nagesha Kannadaguili and Samaresh Mitra, pp 1003 DOI:10.1039/DT9890001003

Formation of alkylurethanes from carbon dioxide by regioselective O-alkylation of alkali-metal N,N-diethylcarbamates in the presence of complexing agents Antonio Belforte and Fausto Calderazzo, pp 1007 DOI:10.1039/DT9890001007

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX019

Issue 6

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX021

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP021

Synthesis and reactivity of trinuclear complexes of platinum containing the single bridging ligand SC4H8. Molecular structure of [NBu4]2[trans-PtCl2{(µ-SC4H8)Pt(C6F5)3}2] Rafaei Usón, Juan Forniés, Milagros Tomás and Irene Ara, pp 1011 DOI:10.1039/DT9890001011

Magnetic properties of mono-, bi-, and tri-nuclear copper(II) complexes of novel oxamato and oxamido ligands. Crystal structure of a mononuclear precursor Jean-Pierre Costes, Francoise Dahan and Jean-Pierre Laurent, pp 1017 DOI:10.1039/DT9890001017

Synthesis, structures, and reactions of ethenethiolato complexes of molybdenum and tungsten [M{3-SC(CF3)C(CF3)H}(CF3CCCF3)(5-C5H5)](M = Mo or W). Their relevance to the mechanism of metal-promoted isomerisation of carbon-carbon double bonds Naz M. Agh-Atabay and Jack L. Davidson, pp 1027 DOI:10.1039/DT9890001027

An investigation of the bonding in [Ru2(O2CCF3)4] and [Ru2(O2CCF3)4(NO)2] David L. Clark, Jennifer C. Green and Catherine M. Redfern, pp 1037 DOI:10.1039/DT9890001037

Six- and five-co-ordinate ruthenium(II) complexes with 1,2-bis(dicyclohexylphosphino)ethane. X-Ray crystal structure of the d6 five-co-ordinate [RuCl{(C6H11)2PCH2CH2P(C6H11)2}2]PF6 Antonio Mezzetti, Alessandro Del Zotto, Pierluigi Rigo and Nevenka Bresciani Pahor, pp 1045 DOI:10.1039/DT9890001045

Complexes of aminophosphonates. Part 3. Copper(II) complexes of several monophosphono and diphosphono dipeptides Tamas Kiss, Etelka Farkas, Henryk Kozlowski, Zdzislaw Siatecki, Pawel Kafarski and Barbara Lejczak, pp 1053 DOI:10.1039/DT9890001053

6, 13-Diamino-6,13-dimethyl-1,4,8,11-tetra-azacyclotetradecane, L7, a new, potentially sexidentate polyamine ligand. Variable co-ordination to cobalt (III) and crystal structure of the complex[CO(L7)]Cl2[ClO4] Paul V. Bernhardt, Geoffrey A. Lawrance and Trevor W. Hambley, pp 1059 DOI:10.1039/DT9890001059

Synthesis of a new P2N2 ligand N,N-bis[2-(diphenylphosphino)phenyl]propane-1,3-diamine, H2L2, and some of its complexes with elements of the nickel triad and rhodium: X-ray structure analyses of the neutral complex [NiL2] and the trans-spanned [Rh(CO)Cl(H2L2)] Mervyn K. Cooper, Paul A. Duckworth, Trevor W. Hambley, Gregory J. Organ, Kim Henrick, Mary McPartlin and Anjali Parekh, pp 1067 DOI:10.1039/DT9890001067

Iridium(III) hydrido complexes with 2-pyridinaldazines. Crystal structure of [IrH2(mpaa)(PPh3)2]SbF6. Synthesis and characterization of homo- and hetero-nuclear complexes Fernando J. Lahoz, Antonio Tiripicchio, Francesco Neve and Mauro Ghedini, pp 1075 DOI:10.1039/DT9890001075

Crystal structures of di-iron µ-2-(C,C)-ketene complexes, [{Fe(5-C5H5)(CO)2}2(µ-CH2CO)] and [{Fe(5-C5Me5)(CO)2}2(µ-CH2CO)]. Synergistic metal-to-ligand back donation as revealed by comparison with [{Fe(5-C5H5)(CO)2}2(µ-CH2CH2CO)] Munetaka Akita, Atsuo Kondoh and Yoshihiko Moro-Oka, pp 1083 DOI:10.1039/DT9890001083

Monohydrido-bridged platinum(II)-gold(I) complexes. X-Ray crystal structure of [(Ph3P)2(C6Cl5)Pt(µ-H)Au(PPh3)]ClO4·2Et2O Margarita Crespo, Joaquim Sales and Xavier Solans, pp 1089 DOI:10.1039/DT9890001089

Synthesis and reactivity of binuclear pyrazolate-bridged ruthenium(I) complexes. Crystal structures of bis[µ-(3,5-dimethylpyrazolato-NN)-tricarbonylruthenium(I)](Ru-Ru) and bis[µ-(3,5-dimethylpyrazolato-NN)]-µ-iodo-bis[tricarbonylruthenium(II)]tri-iodide Javier A. Cabeza, Cayetana Landázuri, Luis A. Oro, Daniele Belletti, Antonio Tiripicchio and Marisa Tiripicchio Camellini, pp 1093 DOI:10.1039/DT9890001093

Crystal structure of the new low-dimensional metal Cs0.82[Pd{S2C2(CN)2}2]·0.5H2O Michael B. Hursthouse, Richard L. Short, Peter I. Clemenson and Allan E. Underhill, pp 1101 DOI:10.1039/DT9890001101

Reactivity studies on the hydrolysis of iron(II) complexes of substituted phenanthrolines in dioxane-water solvents Fernando Ibáñez, José G. Santos, M. Angélica Francois and Sergio Gallardo, pp 1105 DOI:10.1039/DT9890001105

Synthesis and characterization of pentanuclear Fe-Ir carbonyl clusters. Solid-state structures of [N(PPh3)2]2[FeIr4(CO)15] and [PPh4][Fe2Ir3(CO)14] Roerto Dalla Pergola, Luigi Garlaschelli, Francesco Demartin, Mario Manassero, Norberto Masciocchi, Mirella Sansoni and Alessandro Fumagalli, pp 1109 DOI:10.1039/DT9890001109

Low-lying electronic states in µ-phenolato copper(II) binuclear compounds with hydroxo, ethanolato, azido, and cyanato exogenous bridges: crystal structures, magnetic properties, and interpretations Olivier Kahn, Talal Mallah, Jacqueline Gouteron, Susanne Jeannin and Yves Jeannin, pp 1117 DOI:10.1039/DT9890001117

Preparation and characterisation of linear mixed-metal trinuclear carboxylate complexes of general formula [M2M(O2CR)6(C9H7N)2]; crystal structure of [Zn2Ba(O2CCMe3)6(C9H7N)2] William Clegg, Paul A. Hunt, Brian P. Straugham and Maria Antonia Mendiola, pp 1127 DOI:10.1039/DT9890001127

Trinuclear pyrazolate complexes. Crystal structure of [(OC)2Rh(µ-pz)2Pd(µ-pz)2Rh(CO)2] M. Teresa Pinillos, Cristina Tejel, Luis A. Oro, M. Carmen Apreda, Concha Foces-Foces and Félix H. Cano, pp 1133 DOI:10.1039/DT9890001133

Synthesis of ammonium ions and nitrosylation reactions using nitrosyl chloride and alkyl nitrites M. Ishaque Khan and U. C. Agarwala, pp 1139 DOI:10.1039/DT9890001139

Synthesis and characterization of a family of nitrile-substituted triangular hydridocarbonyl rhenium clusters, [Re3(µ-H)3(CO)12-n(NCMe)n](n= 1 - 3). X-Ray crystal structures of [Re3(µ-H)3(CO)11(NCMe)] and [Re3(µ-H)3(CO)9(NCMe)3] Tiziana Beringhelli, Giuseppe D'Alfonso, Maria Freni, Gianfranco Ciani, Massimo Moret and Angelo Sironi, pp 1143 DOI:10.1039/DT9890001143

Synthesis of hydridotrifluoromethyl complexes of platinum(II). A spectroscopic investigation of the trans and cis influence of ligands in hydridoplatinum(II) compounds Rino A. Michelin and Renzo Ros, pp 1149 DOI:10.1039/DT9890001149

Blue copper models. Spectroscopic and electrochemical studies of copper(II) complexes with new ligand systems containing sulphur and nitrogen donor atoms Luigi Casella, Michele Gullotti, Alessandro Pintar, Fiorella Pinciroli, Roberto Viganò and Piero Zanello, pp 1161 DOI:10.1039/DT9890001161

Zinc(II) complexes of 4,7-diazadecane-1,10-diamine, 4,8-diazaundecane-1,11-diamine, and tetraethylenepentamine: a carbon-13 nuclear magnetic resonance study David N. Hague and Anthony D. Moreton, pp 1171 DOI:10.1039/DT9890001171

New metal-sulphur-nitrogen compounds from reactions in liquid ammonia. The X-ray structures of trans-bis(acetophenone dimethylhydrazone-N)dichloropalladium(II) and [di(azathien)-1-yl-S1N4][2-(hydrazonoethyl)phenyl]palladium(II) Caroline A. O'Mahoney, Ivan P. Parkin, David J. Williams and J. Derek Woollins, pp 1179 DOI:10.1039/DT9890001179

Metal complexes as ligands. Part 12. Synthesis and X-ray crystal structure of a hexanuclear nickel(II) complex based on two isosceles trinuclear components with imidazolate bridges Thitinant Thanyasiri and Ekk Sinn, pp 1187 DOI:10.1039/DT9890001187

Chelate-stabilised alcohol- and alkoxo-palladium(II) complexes derived from the ligands Ph2PCH2CR2OH (R = Me or H) Andrew W. G. Platt and Paul G. Pringle, pp 1193 DOI:10.1039/DT9890001193

Photocatalytic reactions in the 2,3,7,8,12,13,17,18-octaethylporphyrinatoiron(III)-ethanol-carbon tetrachloride system Andrea Maldotti, Carlo Bartocci, Rossano Amadelli and Vittorio Carassiti, pp 1197 DOI:10.1039/DT9890001197

Studies on transition metal peroxo complexes. Part 8. The nature of peroxomolybdates and peroxotungstates in aqueous solution Nicholas J. Campbell, Andrew C. Dengel, Catherine J. Edwards and William P. Griffith, pp 1203 DOI:10.1039/DT9890001203

Syntheses and redox properties of mixed isocyanide, carbonyl, or nitrile complexes of rhenium(I)trans-[Re(CNMe)L(Ph2PCH2CH2PPh2)2]X [L = CNR (R = alkyl or aryl), CO, or NCMe; X = Cl, BF4, or PF6] M. Fernanda N. N. Carvalho and Armando J. L. Pombeiro, pp 1209 DOI:10.1039/DT9890001209

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX023

Issue 7

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX025

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP025

Reactivity of the iridium nitrosyl complex [Ir(NO)(paa)(PPh3)2][PF6]2(paa = 2-pyridinecarbaldehyde azine) with nucleophiles: insertion of NO into a methinic C-H bond; crystal structure of [Ir{(2-C5H4N)CHN-NC(NOH)(2-C5H4N)}{Me-(EtO)CNH}(PPh3)2][PF6]2 Mauro Ghedini, Marcello Longeri, Francesco Neve, Anna Maria Manotti Lanfredi and Antonio Tiripicchio, pp 1217 DOI:10.1039/DT9890001217

The heteronuclear cluster chemistry of the Group 1B metals. Part 11. Effect of the nature of the bidentate diphosphine ligand on the metal framework structures of the gold heteronuclear cluster compounds [Au2Ru4(µ3-H)(µ-H){µ-Ph2P(CH2)nPPh2}(CO)12](n= 1-6). X-Ray crystal structures of [Au2Ru4(µ3-H)(µ-H){µ-Ph2P(CH2)nPPh2}(CO)12](n= 1 or 2) Scott S. D. Brown, Ian D. Salter, Andrew J. Dent, Gillian F. M. Kitchen, A. Guy Orpen, Paul A. Bates and Michael B. Hursthouse, pp 1227 DOI:10.1039/DT9890001227

Photo-oxidation of alcohols by hexachlorometalate(IV) ions (M = Pt, Pd, or Ir): spin trapping and matrix isolation electron spin resonance studies Anand G. Fadnis and Terence J. Kemp, pp 1237 DOI:10.1039/DT9890001237

Isotopic multiplets in the carbon-13 nuclear magnetic resonance spectra due to partial deuteriation of co-ordinated NH2 and NH groups of cobalt(III) complexes containing an N-glycoside. Importance of sugar ring oxygen atoms in the long-range isotope shifts Katsuaki Ishida, Masanobu Hidai, Morio Yashiro, Sadao Yoshikawa and Shigenobu Yano, pp 1241 DOI:10.1039/DT9890001241

Reaction of [Rh2{µ-1,8-(NH)2C10H6}(CO)2(PPh3)2] with [M(PPh3)]+(M = Au, Ag, or Cu): formation of unusual 44-electron Rh2M clusters. Crystal structure of [Rh2{µ-Au(PPh3)}{µ-1,8-(NH)2C10H6}(CO)2(PPh3)2]ClO4·2CH2Cl2 María J. Fernández, Jávier Modrego, Luis A. Oro, María-Carmen Apreda, Felix H. Cano and Concepción Foces-Foces, pp 1249 DOI:10.1039/DT9890001249

New dialkylamido complexes of transition metals in Groups 4 and 5 stabilised by terdentate ligands A. Richard Wills and Peter G. Edwards, pp 1253 DOI:10.1039/DT9890001253

Formation of mixed-ligand complexes of cadmium(II) halide with tri-n-octylphosphine oxide and pyridine or substituted pyridines in 1,2-dichloroethane Keiichi Satoh, Yokio Takahashi, Toshio Suzuki and Koyoshi Sawada, pp 1259 DOI:10.1039/DT9890001259

Mode of binding of dimethyl sulphoxide in platinum(II) and palladium(II) cationic complexes containing a chelated diamine. X-Ray crystal structures of (2,2-bipyridyl)chloro(dimethyl sulphoxide-O)palladium(II) tetrafluoroborate and chloro(dimethyl sulphoxide-S)(ethylenediamine)palladium(II) perchlorate Giuliano Annibale, Lucio Cattalini, Valerio Bertolasi, Valeria Ferretti, Gastone Gilli and Martin L. Tobe, pp 1265 DOI:10.1039/DT9890001265

Structure of µ-fluoro-bis[bis(2,2-bipyridyl)fluoronickel(II)] fluoride-ethanol (1/2) trihydrate, revealing several unique features including strong hydrogen bonds between fluoride ions and ethanol molecules John Emsley, Muhammad Arif, Paul A. Bates and Michael B. Hursthouse, pp 1273 DOI:10.1039/DT9890001273

Solution structure and dynamic behaviour of two isomers of [Fe3(CO)9{P(OR3)}3](R = Me, Et, or Ph) derivatives Silvio Aime, Mauro Botta, Olimpia Gambino, Roberto Gobetto and Domenico Osella, pp 1277 DOI:10.1039/DT9890001277

Proton electron nuclear double resonance study of oxovanadium(IV) complexes of D-galacturonic and polygalacturonic acids Mario Branca, Giovanni Micera, Alessandro Dessi' and H. Kozlowski, pp 1283 DOI:10.1039/DT9890001283

Proton electron nuclear double resonance study of oxovanadium(IV) complexes of o-diphenolic ligands Mario Branca, Giovanni Micera and Alessandro Dessi', pp 1289 DOI:10.1039/DT9890001289

Composition, stability, and lability of copper(II) dipeptide complexes Valery G. Shtyrlin, Edward L. Gogolashvili and Alexey V. Zakharov, pp 1293 DOI:10.1039/DT9890001293

Thermodynamic and spectrophotometric investigation of complex formation between hydrogen, cobalt(II), nickel(II), and copper(II) ions and 2-amino-N-hydroxypropanamide in aqueous solution Enrico Leporati, pp 1299 DOI:10.1039/DT9890001299

Contributions to the chemistry of boron. Part 194. Synthesis and characterization of mono, bi-, and tri-cyclic boron-nitrogen-sulphur ring systems. Crystal structure of 2,7,9,14-tetrakis(diethylamino)-3,5,6,10,12,13-hexathia-1,8-diaza-2,4,7,9,11,14-hexaboratricyclo[9.3.0.04,8]tetradecane Aidan Kendrick, Heinrich Nöth, Beate Stalla and Wolfgang Storch, pp 1311 DOI:10.1039/DT9890001311

Reactions of co-ordinated ligands. Part 45. Ligand displacement and oxidative reactions of the carbyne complex [Mo(CCH2But){P(OMe)3}2(-C5H5)]; crystal and molecular structures of [Mo{3-RNCC(CH2But)CNR}-(CNR)2(-C5H5)](R = 2,6-Me2C6H3), [Mo(CCHBut)I{P(OMe)3}2(-C5H5)], and [M o{C(CH2But)P(O)(OMe)2}{P(OMe)3}(-C5H5)] Paul K. Baker, Geoffrey K. Barker, Daljit S. Gill, Michael Green, A. Guy Orpen, Ian D. Williams and Alan J. Welch, pp 1321 DOI:10.1039/DT9890001321

Reactions of co-ordinated ligands. Part 46. Formation of [Os3(µ-H)(µ-CCH2CHMe2)(CO)10] and [Os3(µ-H)(µ-CCHCMe2)(CO)10] by carbon-carbon -bond and carbon-hydrogen activation of 3,3-dimethylcyclopropene; crystal and molecular structure of [Os3(µ-H)(µ-CCH2CHMe2)(CO)10] and evidence for its facile rearrangement to [Os3(µ-H)(µ-CHCHCHMe2)(CO)10] Michael Green, A. Guy Orpen and Colin J. Schaverien, pp 1333 DOI:10.1039/DT9890001333

Synthesis, spectroscopic, and magnetic studies of copper(II) with N-protected amino acids: crystal and molecular structure of diaquatetrakis(µ-N-benzoyl--alaninato)-dicopper(II) Sarjit Singh Sandhu, Maninder Singh Hundal, Geeta Sood and Shivcharan Singh Dhillon, pp 1341 DOI:10.1039/DT9890001341

Sulphonamide nitrogen-containing, nitrogen-protected amino acids interacting with the Cd2+ ion. A cadmium-113 nuclear magnetic resonance and potentiometric study. X-Ray diffraction of [Cd(ts--alaO)2(H2O4)] Giovanna Battistuzzi Gavioli, Ledi Menabue, Monica Saladini, Marco Sola, Anna Bonamartini Corradi and Luigi P. Battaglia, pp 1345 DOI:10.1039/DT9890001345

Autoxidation of a dicopper(I) macrocyclic complex: evidence for a mixed-valence intermediate M. Fernanda Cabral, Joao Cabral, Jadwiga Trocha-Grimshaw, Kieran P. McKillop, S. Martin Nelson and Jane Nelson, pp 1351 DOI:10.1039/DT9890001351

Thermal and hydrothermal stability of SAPO-5 and SAPO-37 molecular sieves Marguerite Briend, Afshine Shikholeslami, Marie-Jeanne Peltre, Denise Delafosse and Denise Barthomeuf, pp 1361 DOI:10.1039/DT9890001361

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 87. Docosahedral carbaborane(alkylidyne)tungsten complexes as reagents for the synthesis of compounds with heteronuclear metal-metal bonds: crystal structures of [NEt4][W(CC6H6Me2-2,6)(CO)2(6-C2B10H10Me2)] and [NEt4][WFe(µ-CC6H3Me2-2,6)(CO)4(6-C2B10H10Me2)] Susan J. Crennell, David D. Devore, Sandra J. B. Henderson, Judith A. K. Howard and F. Gordon A. Stone, pp 1363 DOI:10.1039/DT9890001363

Heteronuclear transition metal-alkyne clusters. Part 1. Reactions of tris(alkyne)monocarbonyltungsten complexes with octacarbonyldicobalt. Synthesis, X-ray crystal structure, and two-dimensional nuclear magnetic resonance studies of [WCo2(µ-C2Et2)(µ-C4Et4)(CO)8] Ian D. Scott, David O. Smith, Michael J. Went and Louis J. Farrugia, pp 1375 DOI:10.1039/DT9890001375

Complexes of the pyridine-based, tridentate, sulphur-containing ligands 2,6-bis(ethylthiomethyl)pyridine, 2,6-bis(methoxycarbonylethylthiomethyl)-pyridine, and 2,6-bis(benzylthiomethyl)pyridine. Crystal structure of [2,6-bis(ethylthiomethyl)pyridine]dichlorocadmium(II) hydrate Francesc Teixidor, Lluis Escriche, Isabel Rodriguez, Jaume Casabó, Jordi Rius, Elies Molins, Benjamin Martínez and Carles Miravitlles, pp 1381 DOI:10.1039/DT9890001381

Substitution reactions of the zerovalent iron complexes [Fe(-C6H6)(PMe3)2] and [Fe(-C6H6)(dmpe)](dmpe = Me2PCH2CH2PMe2) Laura Howarth and Luet-Lok Wong, pp 1385 DOI:10.1039/DT9890001385

Heteroleptic poly(pyrazolyl)borate derivatives of the lanthanide ions. The synthesis of acetylacetonate complexes and the molecular structures of [Ln{HB(C3N2H3)3)2(MeC(O)CHC(O)Me}](Ln = Ce or Yb) Michael A. J. Moss, Christopher J. Jones and Anthony J. Edwards, pp 1393 DOI:10.1039/DT9890001393

Notes. A planar, binucleating, pyrazole derivative ligand. Crystal structure of bis[µ-3,5-bis(2-pyridyl)pyrazolato-N1N:N2N]-bis[dimethanolnickel(II)] dichloride dihydrate Jaume Casabó, Josefina Pons, Khwaja S. Siddiqi, Francesc Teixidor, Elias Molins and Carles Miravitlles, pp 1401 DOI:10.1039/DT9890001401

Synthesis and X-ray crystal structure of [ReO(Cl){(2-OC6H4CHNCH2CH2OCH2)2}], an example of four-co-ordination by a potentially sexidentate ligand Hilary J. Banbery, Ferida McQuillan, Thomas A. Hamor, Christopher J. Jones and Jon A. McCleverty, pp 1405 DOI:10.1039/DT9890001405

Preparation and crystal structure of a binuclear compound of methylmercury(II) containing bismuthiol I as a bridging ligand Maria V. Castaño, Maria M. Plasencia, Alejandro Macias, José S. Casas, José Sordo and Eduardo E. Castellano, pp 1409 DOI:10.1039/DT9890001409

Hydrazido-complexes of titanium(IV) with tris(pyrazolyl)borates. Crystal structures of [TiLCl2(NMeNMe2)] and [TiLCl2(NPhNH2)], L = tris(pyrazolyl)borate David L. Hughes, G. Jeffery Leigh and David G. Walker, pp 1413 DOI:10.1039/DT9890001413

Crystal and molecular structure of [1,2-bis(diethylphosphino)ethane mono-oxide-P,O]trichloro-oxomolybdenum(V) Mohamad Abu Bakar, Adrian Hills, David L. Hughes and G. Jeffrey Leigh, pp 1417 DOI:10.1039/DT9890001417

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX027

Issue 8

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX029

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP029

Synthesis, structure, and reactivity of the heteronuclear clusters [Os5H(CO)15{M(PR3)}] and [Os5(CO)15{M(PR3)}2](M = Cu, Ag, or Au; R = Ph or Me); the X-ray crystal structure of [Os5H(CO)15{Au(PPh3)}] Brian F. G. Johnson, Rajesh Khattar, Jack Lewis and Paul R. Raithby, pp 1421 DOI:10.1039/DT9890001421

Reactivity of binuclear pyrazolate-bridged rhodium complexes with isocyanides. Molecular structure of [Rh2(µ-pz)I2(CNBut)2-(µ-Ph2PCH2PPh2)2]BF4(pz = pyrazolate) Daniel Carmona, Luis A. Oro, Pedro L. Pérez, Antonio Tiripicchio and Marisa Tiripicchio-Camellini, pp 1427 DOI:10.1039/DT9890001427

Dimeric mixed-ligand copper(II) complexes with di-imines and salicylaldehydate Evgenia Spodine, Ana Maria Atria, Octavio Peña, Hervé L'Helgouach and Maria Teresa Garland, pp 1435 DOI:10.1039/DT9890001435

Synthesis, X-ray characterization, and Q-band electron spin resonance studies of heterometallic, polymeric compounds formed by yttrium and lanthanide(III) nitrates with HgL2(L = C4H6NO, the anion of 2-pyrrolidone); crystal structures of [{Hg2EuL4(NO3)3}n] and [{Hg2Tb2L6(NO3)6}n] David M. L. Goodgame, David J. Williams and Richard E. P. Winpenny, pp 1439 DOI:10.1039/DT9890001439

Crystal and molecular structures of µ-hydrido-bis[fac-(2,2-bipyridine)-tricarbonylrhenium(I)]chloride, fac-(2,2-bipyridine)tricarbonyl-formatorhenium(I), and fac-(2,2- bipyridine)tricarbonyl(cyanotri-hydroborato)rhenium(I) Jean Guilhem, Claudine Pascard, Jean-Marie Lehn and Raymond Ziessel, pp 1449 DOI:10.1039/DT9890001449

Synthesis of the cluster dianion [Os11C(CO)27]2- by pyrolysis and its reactions with electrophiles; X-ray structure analysis of the mixed-metal derivative [PMePh3][Os11C(CO)27{Cu(NCMe)}]·CH2Cl2 and the hydrido derivative [PMePh3][Os11C(CO)27H] Simon R. Drake, Brian F. G. Johnson, Jack Lewis, William W. J. H. Nelson, Maria D. Vargas, Trushar Adatia, Dario Braga, Kim Henrick, Mary McPartlin and Angelo Sironi, pp 1455 DOI:10.1039/DT9890001455

Polyhedral organoiridaborane chemistry. The reaction of MeNC with [6-(5- C5Me5)-nido-6-IrB9H13]. Nuclear magnetic resonance studies and the crystal and molecular structure of [4,4-(5-C5Me5)(MeNC)-arachno-4-IrB8H12] Karl Nestor, Xavier L. R. Fontaine, Norman N. Greenwood, John D. Kennedy and Mark Thornton-Pett, pp 1465 DOI:10.1039/DT9890001465

Co-ordination of nickel(II) ions by angiotensin II and its peptide fragments. A potentiometric, proton nuclear magnetic resonance and circular dichroism spectroscopic study Leslie D. Pettit, Simon Pyburn, Henryk Kozlowski, Brigitte Decock-Le Reverend and Ferid Liman, pp 1471 DOI:10.1039/DT9890001471

Synthesis and crystal structure of [NiOs3(-C5H5)(µ-H)2{µ-Cu(PPh3)}(CO)9]. Hydrogenation-dehydrogenation reactions of dienes and alcohols with heterogeneous catalysts derived from [NiM3(-C5H5)(µ-H)2(µ-X)(CO)9][M = Ru, X = H; M = Os, X = Cu(PPh3)] Fabrizio Castagno, Mario Castiglioni, Enrico Sappa, Antonio Tiripicchio, Marisa Tiripicchio Camellini, Pierre Braunstein and Jacky Rosé, pp 1477 DOI:10.1039/DT9890001477

Reactions of heteropolyanions in non-polar solvents. Part 3. Activation of dioxygen by manganese(II) centres in polytungstates. Oxidation of hindered phenols Dimitris E. Katsoulis and Michael T. Pope, pp 1483 DOI:10.1039/DT9890001483

The structure of 18-molybdodisulphate(VI)(4-) ion in (NEt4)4S2Mo18O62·CH3CN Toshitaka Hori, Osamu Tamada and Sadayuki Himeno, pp 1491 DOI:10.1039/DT9890001491

Binuclear copper(I) complexes containing two or three 2-(diphenylphosphine) pyridine (dppy) bridging ligands: X-ray crystal structure of [Cu2(µ-dppy)3(MeCN)][BF4]2 and variable-temperature 1H and 31P-{1H} nuclear magnetic resonance studies Elena Lastra, M. Pilar Gamasa, José Gimeno, Maurizio Lanfranchi and Antonio Tiripicchio, pp 1499 DOI:10.1039/DT9890001499

X-Ray structure of a ternary complex, copper(II)-lnosine 5-monophosphate-benzimidazole. The first example for the absence of direct metal-nucleotide interaction Noor Shahina Begum, M. Damodara Poojary and Hattikudur Manohar, pp 1507 DOI:10.1039/DT9890001507

Crystal and molecular structures of diaqua(nitrilotriacetato)aluminium(III) and di-µ-hydroxo-bis(nitrilotriacetato)dialuminate(III) dianion Giovanni C. Valle, G. Giorgio Bombi, Benedetto Corain, Mosé Favarato and Paolo Zatta, pp 1513 DOI:10.1039/DT9890001513

Synthesis, characterization, and thermolytic behaviour of 3-allyl(methyl)(tertiary phosphine)palladium(II), and X-ray structure of the cluster [Pd4(µ-C3H5)2(µ-Cl)2(µ-dppm)2]·4C4H8O (dppm = Ph2PCH2PPh2) Yoshihito Hayashi, Keiji Matsumoto, Yukio Nakamura and Kiyoshi Isobe, pp 1519 DOI:10.1039/DT9890001519

Nucleophilic (Michael) additions to (Ph2P)2CCH2 when chelated to platinum(II) dichloride or di-iodide Simon J. Higgins and Bernard L. Shaw, pp 1527 DOI:10.1039/DT9890001527

Effect of axially bound anions on the electroreduction of tin(IV) porphyrins in tetrahydrofuran Karl M. Kadish, Quan Yun Y. Xu, G. Bhaskar Maiya, Jean-Michel Barbe and Roger Guilard, pp 1531 DOI:10.1039/DT9890001531

Tertiary phosphine complexes of triply bonded ditungsten bis(t-butylamide) tetrachloride. The X-Ray crystal structures of [W2Cl4(NHBut)2(PMe3)2], [W2Cl4(NHBut)2(PEt3)2] and cis-[W2Cl4(NHBut)2(PMe2Ph)2] Donald C. Bradley, Michael B. Hursthouse and Harold R. Powell, pp 1537 DOI:10.1039/DT9890001537

Functional metallomacrocycle derivatives and their polymers. Part 23. Biaxially orientated Langmuir-Blodgett films of substituted metallophthalocyanines Hiroshi Itoh, Toshiki Koyama, Kenji Hanabusa, Etsuko Masuda, Hirofussa Shirai and Tadao Hayakawa, pp 1543 DOI:10.1039/DT9890001543

Comparative study on the multielectron reduction of HOC2H4N3 catalyzed by [NBun4]4[MoFe3S4(SPh)3(o-O2C6Cl4)]2- and [NBun4]2[Fe4S4(SPh)4]-modified glassy carbon electrodes Koji Tanaka, Satoshi Uezumi and Toshio Tanaka, pp 1547 DOI:10.1039/DT9890001547

Chemistry of phosphido-bridged dimolybdenum complexes. Part 3. Reinvestigation of the reaction between [Mo2(-C5H5)2(CO)6] and P2Ph4; X-ray structures of [Mo2(-C5H5)2(µ-PPh2)2(CO)2], [Mo2(-C5H5)2(µ-PPh2)2(µ-CO)], and trans-[Mo2(-C5H5)2(µ-PPh2)2O(CO)] Trushar Adatia, Mary McPartlin, Martin J. Mays, Michael J. Morris and Paul R. Raithby, pp 1555 DOI:10.1039/DT9890001555

Insertion of phenylethyne-thiolate or -selenolate into metal-carbene bonds: synthons for co-ordinated thioacyl or selenoacyl anions and for anionic thiocarbene or selenocarbene complexest Helgard G. Raubenheimer, Gert J. Kruger, Lorna Linford, Charles F. Marais, Ronald Otte, Johannes T. Z. Hattingh and Anthonie Lombard, pp 1565 DOI:10.1039/DT9890001565

Cationic dinuclear rhodium complexes as catalyst precursors for the hydroformylation of alkenest J. Carles Bayón, Pedro Esteban, Julio Real, Carmen Claver and Aurora Ruiz, pp 1579 DOI:10.1039/DT9890001579

Synthesis and reactivity of binuclear perhalogenophenyl derivatives of platinum(I). Molecular structure of [Pt2(C6F5)2(CO)2(PPh3)2]·0.4CHCl3 Rafael Usón, Juan Forniés, Pablo Espinet, Consuelo Fortuño, Milagros Tomás and Alan J. Welch, pp 1583 DOI:10.1039/DT9890001583

Phenyltin trichloroacetate complexes: preparations and structures Nathaniel W. Alcock and S. Mark Roe, pp 1589 DOI:10.1039/DT9890001589

Preparation and characterisation of some nickel(II) tetra-aza macrocyclic complexes bearing pendant polymerisable groups as part of the ligand superstructure James H. Cameron and Stephen Graham, pp 1599 DOI:10.1039/DT9890001599

An ab initio self-consistent field molecular-orbital study of novel stereoelectronic effects in linear R2S3N2 and cyclic XS3N2 systems Robin M. Bannister and Henry S. Rzepa, pp 1609 DOI:10.1039/DT9890001609

Synthesis and characterization of cobalt(III) and cobalt(IV) complexes of N-(2-hydroxyphenyl)salicylamide and homologues Masayuki Koikawa, Mikio Gotoh, Hisashi kawa, Sigeo Kida and Takamitsu Kohzuma, pp 1613 DOI:10.1039/DT9890001613

Zirconium phosphate ester interchange reactions C. Yolanda Ortiz-Avila and Abraham Clearfield, pp 1617 DOI:10.1039/DT9890001617

Notes. Synthesis and characterization of benzylindium compounds Andrew R. Barron, pp 1625 DOI:10.1039/DT9890001625

Molecular structure of heterobimetallic µ-2-(C,C)-ketene complexes Munetaka Akita, Atsuo Kondoh and Yoshihiko Moro-oka, pp 1627 DOI:10.1039/DT9890001627

Stacked planar molecules in antiferromagnetic di-isothiocyanato-bis(thiourea)chromium(II), a new structural type for chromium(II) Jayne Jubb, Leslie F. Larkworthy, Gordon A. Leonard, David C. Povey and B. Joly Tucker, pp 1631 DOI:10.1039/DT9890001631

Synthesis, structure, and electrochemical reduction of 2-(arylazo)pyridine complexes of rhodium(III) Alok Kumar Deb and Sreebrata Goswami, pp 1635 DOI:10.1039/DT9890001635

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX031

Issue 9

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX033

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP033

Lewis-base adducts of Group 11 metal(I) compounds. Part 58. Syntheses, X-ray structures, and far-infrared spectra of the novel [CuX2(bidentate ligand)]-(X = Cl or Br) anion salts of the [Cu(dpa)2]+ cation and the dimeric iodide [(dpa)Cul2Cu(dpa)][dpa = di(2-pyridyl)amine] Graham A. Bowmaker, Peter C. Healy, David L. Kepert, John D. Kildea, Brian W. Skelton and Allan H. White, pp 1639 DOI:10.1039/DT9890001639

Kinetics of the uncatalysed and silver(I)-catalysed oxidation of hydrogen peroxide by [ethylenebis(biguanide)]silver(III) ion in acid perchlorate media Rupendranath Banerjee, Amitava Das and Subrata Dasgupta, pp 1645 DOI:10.1039/DT9890001645

Nature of peroxoborate species in aqueous solution: a study by boron-11 nuclear magnetic resonance and Raman spectroscopy John Flanagan, William P. Griffith, Richard D. Powell and Anthony P. West, pp 1651 DOI:10.1039/DT9890001651

Metallaheteroborane chemistry. Part 5. Synthesis of closo-[2,2-(PR3)2-1,2-SePtB10H10](R3= Et3, Bun3 or Me2Ph) and arachno-[9,9-(PMe2Ph)2-6,9-SePtB8H10] and their characterisation by nuclear magnetic resonance techniques: the crystal and molecular structures of closo-[2,2-(PEt3)2-1,2-SePtB10H10] and arachno-[9,9-(PMe2Ph2),-6,9-SePtB8H10] J. Chem. Soc., Dalton Trans. DOI:10.1039/DT9890001657

Substitution reactions on sterically hindered square-planar trans-[NiBr(R)(PR3)2](R = aryl) complexes. Effects of the substituents of the aryl ligand Manuel Martinez and Guillermo Muller, pp 1669 DOI:10.1039/DT9890001669

Platinum metal thioether macrocyclic complexes: synthesis, electrochemistry, and single-crystal X-ray structures of cis-[RhCl2L2]PF6 and trans-[RhCl2L3]PF6(L2= 1,4,8,11 -tetrathiacyclotetradecane, L3= 1,5,9,13-tetrathiacyciohexadecane) Alexander J. Blake, Gillian Reid and Martin Schröder, pp 1675 DOI:10.1039/DT9890001675

Copper(II)-assisted hydrolysis of 2,4,6-tris(2-pyridyl)-1,3,5-triazine. Part 2. Crystal structures of [bis(2-pyridylcarbonyl)amido](pyridine-2-carboxamide)copper(II) trifluoromethanesulphonate and [bis(2-pyridylcarbonyl)amido][2,4,6-tris(2-pyridyl)-1,3,5-triazine]copper(II) trifluoromethanesuiphonate Juan Faus, Miguel Julve, Josep M. Amigó and Tony Debaerdemaeker, pp 1681 DOI:10.1039/DT9890001681

Syntheses, crystal structures, and Raman and resonance Raman spectroscopy of platinum(II), platinum(IV), and halogen-bridged chain platinum(II,IV) complexes involving the terdentate ligand 3-methyl-3-azapentane-1,5-diamine(4Me-dien) Francesco P. Fanizzi, Giovanni Natile, Maurizio Lanfranchi, Antonio Tiripicchio, Robin J. H. Clark and David J. Michael, pp 1689 DOI:10.1039/DT9890001689

Synthesis and reactions of 1,6-bis(2-butyltellurophenyl)-2,5-diazahexa-1,5-diene and related compounds. The crystal and molecular structures of 2-(butyldichlorotelluro)benzaldehyde and bis[2-(hydroxyiminomethyl)phenyl] ditelluride Khalid Y. Abid, Najih I. Al-Salim, Martin Greaves, William R. McWhinnie, Antony A. West and Thomas A. Hamor, pp 1697 DOI:10.1039/DT9890001697

Direct insertion of a nitrogen atom into the S-S bond of a 1,2,3,5- dithiadiazole ring in a direct current nitrogen glow discharge, and X-ray crystal structure of 4-methyl-1,2,3,5-dithiadiazole Arthur J. Banister, Michael I. Hansford, Zdenek V. Hauptman, Simon T. Wait and William Clegg, pp 1705 DOI:10.1039/DT9890001705

Reactions of cyclopalladated compounds. Part 21. Various examples of sulphur-assisted intramolecular palladation of aryl and alkyl groups Jaïrton Dupont, Nohma Beydoun and Michel Pfeffer, pp 1715 DOI:10.1039/DT9890001715

On the relationship between crystallographic and spectroscopic evidence of dynamic processes in the solid state: the cases of cis- and trans-[Fe2(-C5H5)2(CO)4] Dario Braga, Cecilia Gradella and Fabrizia Grepioni, pp 1721 DOI:10.1039/DT9890001721

Complexes of ligands providing endogenous bridges. Part 7. The concurrent formation of 1 + 1 and 2 + 2 oxa-azamacrocycles; the X-ray crystal structure of an exocyclic dinuclear copper(II) complex Neil A. Bailey, David E. Fenton, Mark G. Williams and Derek J. Winter, pp 1727 DOI:10.1039/DT9890001727

Closely related macrocyclic and acyclic tridentate, pyridine derivatives, containing sulphur, and their complexes. Crystal structures of {dichloro-3,10-dithia-16-azabicyclo[l0.3.1]hexadeca-1(16),12,14-triene}copper(II) and [2,6-bis(ethyithiomethyl)pyridine]dichlorocopper(II) Lluis Escriche, Marta Sanz, Jaime Casabó, Francesc Teixidor, Elies Molins and Carlos Miravitlles, pp 1739 DOI:10.1039/DT9890001739

Mixed-metal complexes in solution. A potentiometric and spectrophotometric study of copper(II)-nickel(II)--hydroxylysine complexes in aqueous solution Pier G. Daniele, Orfeo Zerbinati, Alessandro De Robertis, Concetta De Stefano and Silvio Sammartano, pp 1745 DOI:10.1039/DT9890001745

Structural effects of one-electron oxidation on a cyclobutadieneiron derivative: X-ray crystal structures of [Fe(CO){P(OMe)3}2(-C4Ph4)] and [Fe(CO){P(OMe)3}2(-C4Ph4)]BF4 A. Guy Orpen, Neil G. Connelly, Mark W. Whiteley and Peter Woodward, pp 1751 DOI:10.1039/DT9890001751

Co-ordination compounds of indium. Part 47. Indium(I) and thallium(I) derivatives of alkanedithiols Corrado Geloso, Hassan E. Mabrouk and Dennis G. Tuck, pp 1759 DOI:10.1039/DT9890001759

Neutron diffraction study of the cation distributions in the systems Fe7 -xMx(PO4)6(M = Mn or Co) Philip Lightfoot and Anthony K. Cheetham, pp 1765 DOI:10.1039/DT9890001765

Vibrational spectroscopic studies of tervalent hexa-aqua cations: oriented single-crystal Raman spectra between 275 and 1 200 cm-1 of the caesium rhodium alums, CsRh(SO4)2·12H2O, CsRh(SeO4)2·12H2O, and CsRh(SO4)2·12D2O Stephen P. Best, James K. Beattie, Robert S. Armstrong and Gerard P. Braithwaite, pp 1771 DOI:10.1039/DT9890001771

Charge density in the [Mo(NCS)6]3- ion in Cs3Mo(NCS)6 Christopher D. Delfs, Brian N. Figgis, Edward S. Kucharski and Philip A. Reynolds, pp 1779 DOI:10.1039/DT9890001779

Synthetic, spectroscopic, and X-ray studies on methylmercury(II) and dimethylthallium(III) complexes with cyclopentanone thiosemicarbazone Alejandro Macías, María C. Rodríguez-Argüelles, María I. Suárez, Agustín Sánchez, José S. Casas, José Sordo and Ullrich Englert, pp 1787 DOI:10.1039/DT9890001787

Phenoxo and diphenoxo complexes of titanium(II) and vanadium(III): synthesis and X-ray structure Marinella Mazzanti, Carlo Floriani, Angiola Chiesi-Villa and Carlo Guastini, pp 1793 DOI:10.1039/DT9890001793

Organic chemistry of dinuclear metal centres. Part 12. Synthesis, X-ray crystal structure, and reactivity of the di-µ-alkylidene complex [Ru2(CO)2(µ-CHMe)(µ-CMe2)(-C5H5)2]: alkylidene linking Robert E. Colborn, David L. Davies, Andrew F. Dyke, Selby A. R. Knox, Kevin A. Mead, A. Guy Orpen, Jacques E. Guerchais and Jean Roué, pp 1799 DOI:10.1039/DT9890001799

Organic chemistry of dinuclear metal centres. Part 13. Synthesis, structure, and reactivity of [Ru2(CO)4(5: 5-C5H4CH2C5H4)] Selby A. R. Knox, Kirsty A. Macpherson, A. Guy Orpen and Melvyn C. Rendle, pp 1807 DOI:10.1039/DT9890001807

Preparation of thionylimide complexes of titanium, zirconium, and hafnium. Crystal structure of [Zr(cp)(-C5Me5)(NSO)2] Herbert Plenio, Herbert W. Roesky, Frank T. Edelmann and Mathias Noltemeyer, pp 1815 DOI:10.1039/DT9890001815

Organosulphur phosphorus acid compounds. Part 1. m-Sulphophenylphosphonic acid Enzo Montoneri, Maria C. Gallazzi and Mariella Grassi, pp 1819 DOI:10.1039/DT9890001819

Lamellar inorganic ion exchangers. H+/Cs+ ion exchange in -titanium phosphate Eliana González, Ricardo Llavona, José R. Garcia and Julio Rodríguez, pp 1825 DOI:10.1039/DT9890001825

The mechanisms of fluxionality of [Fe3(CO)12 -n{P(OR)3}n](R = Me, n= 0-3; R = Pri, n= 2 or 3) and the X-ray structure of [Fe3(CO)10{P(OMe)3}2] Harry Adams, Neil A. Bailey, Gary W. Bentley and Brian E. Mann, pp 1831 DOI:10.1039/DT9890001831

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 88. Carbaboranetungsteniridium compounds; crystal structure of the complex [WIr(µ-CC6H4Me-4)(CO)2(PEt3)2(5-C2B9H9Me2)] John C. Jeffery, Miguel A. Ruiz, Paul Sherwood and F. Gordon A. Stone, pp 1845 DOI:10.1039/DT9890001845

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 89. Tetra- and penta-nuclear tungsten-rhodium complexes: crystal structures of [W3Rh2(µ-CO)2(µ-CMe){µ-C(Me)C(O)}(µ-PPh2)2(µ3-CMe)(CO)2(-C5H5)3] and [W3Rh2(µ-CO)3(µ-CMe){µ-C(Me)PPh2}(µ3-CMe)-(CO)2(C5H5)3] Simon J. Davies, Judith A. K. Howard, Massimino U. Pilotti and F. Gordon A. Stone, pp 1855 DOI:10.1039/DT9890001855

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 90. Synthesis of the complexes [W2M2(µ-CO)(µ-CMe)(µ3-CMe)(µ-PPh2)2(CO)3(-C5H5)2](M = Rh or Ir) and related tetra- and penta-nuclear metal compounds; interconversion of ketenyl and 5-phospha-alkyne ligands bridging tungsten-rhodium bonds Simon J. Davies and F. Gordon A. Stone, pp 1865 DOI:10.1039/DT9890001865

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 91. Steric implications in the reactions of the complexes [M(CR)(CO)2(-C5H5)](M = Mo or W, R = C6H4Me-4, C6H4OMe-2, or C6H3Me2-2,6) with the compounds [Mo(CO)3(NCMe)3] and [Cu(thf)(- C5Me5)](thf = tetrahydrofuran); crystal structure of [Mo3(µ-CC6H3Me2-2,6)2(CO)6(-C5H5)2] Stephen J. Dossett, Anthony F. Hill, Judith A. K. Howard, Bashir A. Nasir, Thomas P. Spaniol, Paul Sherwood and F. Gordon A. Stone, pp 1871 DOI:10.1039/DT9890001871

Notes. Synthesis and properties of trimethyl(trifluorosilyl)stannane John J. D'Errico and Kenneth G. Sharp, pp 1879 DOI:10.1039/DT9890001879

Bi-, tetra-, and poly-nuclear complexes of gold(I) and silver(I) with bis(diphenylphosphino)-methanide or -amide acting as six-electron donors Rafael Usón, Antonio Laguna, Mariano Laguna and Ma. Concepción Gimeno, pp 1883 DOI:10.1039/DT9890001883

Additions and corrections William Clegg, Neville A. Compton, R. John Errington, Nicholas C. Norman, Andrew J. Tucker and Mark J. Winter, pp 1887 DOI:10.1039/DT9890001887

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX035

Issue 10

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX037

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP037

Multinuclear magnetic resonance studies of the hydrolysis of aluminium(III). Part 9. Prolonged hydrolysis with aluminium metal monitored at very high magnetic field J. W. Akitt, Julie M. Elders, Xavier L. R. Fontaine and Amit K. Kundu, pp 1889 DOI:10.1039/DT9890001889

Multinuclear magnetic resonance studies of the hydrolysis of aluminium(III). Part 10. Proton, carbon-13, and aluminium-27 spectra of aluminium acetate at very high magnetic field J. W. Akitt, Julie M. Elders, Xavier L. R. Fontaine and Amit K. Kundu, pp 1897 DOI:10.1039/DT9890001897

Preparation, characterisation, and reactions with phosphite donor ligands of the new cationic monoalkyne complexes [WI(CO)(NCMe){Ph2P(CH2)nPPh2}(2-RC2R)][BF4](n= 1-6; R = Me or Ph). X-ray crystal structure of [WI(CO)-{P(OPri)3}{Ph2P(CH2)PPh2}(2-MeC2Me)][BF4]0.5[OH]0.5·0.5H2O Paul K. Baker, Kevin R. Flower, Michael G. B. Drew and George Forsyth, pp 1903 DOI:10.1039/DT9890001903

Metal complexes of -hydroxyiminophosphonic acid derivatives. Preparation and crystal structures of calcium and cadmium complexes of methyl (E)--hydroxyiminobenzylphosphonate Dan Gibson and Rafik Karaman, pp 1911 DOI:10.1039/DT9890001911

Monomolybdononavanadate and cis- and trans-dimolybdo-octavanadate Oliver W. Howarth, Lage Pettersson and Ingegärd Andersson, pp 1915 DOI:10.1039/DT9890001915

Electron spin resonance study of copper(II) complexes of X-glycine and glycyl-X type dipeptides, and related tripeptides. Variation of co-ordination modes with ligand excess and pH in fluid and frozen aqueous solutions Terézia Szabó-Plánka, Gábor Peintler, Antal Rockenbauer, Miklós Gyõr, Mária Varga-Fábián, László Institórisz and Lajos Balázspiri, pp 1925 DOI:10.1039/DT9890001925

Photofragmentation kinetics of some triruthenium carbonyl clusters Nancy M. J. Brodie, Rokeya Huq, John Malito, Stan Markiewicz, Anthony J. Poë and Vasu C. Sekhar, pp 1933 DOI:10.1039/DT9890001933

Steric effect of the adamantyl ligand on crystal structure and dissociation rates in organocobalt B12 models Nevenka Bresciani Pahor, Lucio Randaccio, Ennio Zangrando and Patricia A. Marzilli, pp 1941 DOI:10.1039/DT9890001941

Relation between the torsion angles of acetate chelate rings and the deuteron nuclear magnetic resonance chemical shifts for polyamine-N-carboxylatochromate(III) complexes Sumio Kaizaki and Mariko Hayashi, pp 1947 DOI:10.1039/DT9890001947

Chemistry of [{Cr(cp)(CO)3}2], (cp =5-C5H5). Reaction with elemental P4. A high yield synthesis and crystal structures of [{Cr(cp)(CO)2}2(µ-2-P2)] and [Cr(cp)(CO)2(3-P3)] Lai Yoong Goh, C. K. Chu, Richard C. S. Wong and Trevor W. Hambley, pp 1951 DOI:10.1039/DT9890001951

Rearrangements of CN- functionalities promoted by cobalt(I): reactivity of cyclopentadienylbis(ethylene)cobalt(I) with dibenzophenone azine, benzophenone oxime, benzylidene(phenyl)amine and crystal structure determinations of the products Tommaso Carofiglio, Sergio Stella, Carlo Floriani, Angiola Chiesi-Villa and Carlo Guastini, pp 1957 DOI:10.1039/DT9890001957

Reductive nitrosylation of tetraoxometalates. Part 15. Generation of Mn(NO)3+, Mn(NO)2+, and Mn(NO)22+ moieties directly from MnO4-. Synthesis, characterization, and electrochemistry of cyanonitrosyl derivatives of manganese Ramgopal Bhattacharyya, Nabanita Ghosh and Gobinda P. Bhattacharjee, pp 1963 DOI:10.1039/DT9890001963

Kinetics of formation, dissociation, and isomerization reactions in complexes of cyanopyridines and benzonitrile with pentacyanoruthenate(II) Alejandra E. Almaraz, Luis A. Gentil and Jose A. Olabe, pp 1973 DOI:10.1039/DT9890001973

Spectroscopic and electrochemical study of copper and zinc complexes with a N2S2 ligand donor set. Crystal structure of the copper(II) complex derived from 1,3-propylenediamine and 3-formyl-1-phenyl-2(1H)-pyridinethione Michele Gullotti, Luigi Casella, Allesandro Pintar, Edoardo Suardi, Piero Zanello and Stefano Mangani, pp 1979 DOI:10.1039/DT9890001979

Preparation and structural studies of diphenylthiophosphinito rhodium(III) complexes. X-ray structure analysis of [{(C5Me5)Rh}2(µ-Cl)2(µ-Ph2PS)][BPh4] M. Teresa Pinillos, M. Pilar Jarauta, Daniel Carmona, Luis A. Oro, M. Carmen Apreda, Concha Foces-Foaces and Felix H. Cano, pp 1987 DOI:10.1039/DT9890001987

A barium dithiocyanate complex with an unusual macrocycle containing pendant arms, the amine precursor, and related copper(II) diperchlorate complexes: synthesis and structure Sergio Tamburini, Pietro Alessandro Vigato, Umberto Casellato and Rodolfo Graziani, pp 1993 DOI:10.1039/DT9890001993

Synthesis and characterization of bis(xanthate) complexes of MoII and WII. Crystal structure of [W(S2COPri-S)(S2COPri-SS)(CO)2(PMe3)2] Ernesto Carmona, Leopoldo Contreras, Luis J. Sánchez, Enrique Gútierrez-Puebla and Angeles Monge, pp 2003 DOI:10.1039/DT9890002003

Ruthenium oxo complexes of macrocyclic tertiary amines. Synthesis, electrochemistry, and reactivities of ruthenium oxo complexes of meso-2,3,7,11,12-pentamethyl-3,7,11,17-tetra-azabicyclo[11.3.1]heptadeca-1(17),13,15-triene (L1), and X-ray crystal structure of trans-[RuIVL1(O)(NCO)]ClO4 Chi-Ming Che, Wai-Tong Tang, Wai-On Lee, Wing-Tak Wong and Ting-Fong Lai, pp 2011 DOI:10.1039/DT9890002011

Base-promoted cleavage of a P-C bond in [PtCl2(Ph2PCH2PPh2-PP)] under mild conditions Paola Bergamini, Silvana Sostero, Orazio Traverso, Terence J. Kemp and Paul G. Pringle, pp 2017 DOI:10.1039/DT9890002017

Cluster activation via cyclometallation. Formation of the cyclometallated triosmium carbonyl cluster [Os3H2(CO)9{P(C6H4)Ph}] and its reactions with phosphorus donor ligands. The X-ray crystal structures of [Os3H2(CO)9{P(C6H4)Ph}] and [Os3H(CO)9{P(OMe)3}(PPh2)] Stephen B. Colbran, Patricia T. Irele, Brian F. G. Johnson, Fernando J. Lahoz, Jack Lewis and Paul R. Raithby, pp 2023 DOI:10.1039/DT9890002023

Reactions of the cyclometallated triosmium cluster [Os3H2(CO)9{P(C6H4)Ph}] with brøsnsted acids and dihydrogen: synthesis and X-ray crystal structure of [Os3H2(CF3CO2)(CO)9(µ-PPh2)] Stephen B. Colbran, Patricia T. Irele, Brian F. G. Johnson, Perry T. Kaye, Jack Lewis and Paul R. Raithby, pp 2033 DOI:10.1039/DT9890002033

The heteronuclear cluster chemistry of the Group 1 B metals. Part 12. Variable temperature nuclear magnetic resonance spectroscopic studies of the dynamic behaviour of the mixed-metal cluster compounds [M2Ru4(µ3-H)2(µ-L)(CO)12][M = Cu or Ag, L = Ph2P(CH2)nPPh2(n= 1-6) or cis-Ph2PCHCHPPh2; M = Cu, L = Ph2 As (CH2)nPPh2(n= 1 or 2)] in solution C. Philip Blaxill, Scott S. D. Brown, Julie C. Frankland, Ian D. Salter and Vladimir ik, pp 2039 DOI:10.1039/DT9890002039

Reduction-oxidation properties of organotransition-metal complexes. Part 30. Triazenido-bridged carbonylrhodium bipyridyl complexes with [Rh2]2+, [Rh2]3+, and [Rh2]4+ cores, and the X-ray structures of [Rh2(CO)2(bipy)(µ-RNNNR)2][BF4]·CH2Cl2 and [{Rh2I(CO)(bipy)(µ-RNNNR)2}2][PF6]2·2.5CH2Cl2(R =p-tolyl) Thomas Brauns, Carmen Carriedo, John S. Cockayne, Neil G. Connelly, Gabriel Garcia Herbosa and A. Guy Orpen, pp 2049 DOI:10.1039/DT9890002049

Synthesis and properties of the bis(µ-thiosulphato-S)-bis(dinitrosylferrate)(2-) anion. Crystal and molecular structure of bis[bis(triphenylphosphoranylidene)-ammonium] bis(µ- thiosulphato-S)-bis(dinitrosylferrate) Christopher Glidewell, Ronald J. Lambert, Michael B. Hursthouse and Majid Motevalli, pp 2061 DOI:10.1039/DT9890002061

Notes. Oxo transfer reactions. Mechanistic studies on the oxidation of triphenylphosphine by trans-[ RuVIL(O)2]2+(L = 1,4,8,11 -tetramethyl- 1,4,8,11 -tetra-azacyclotetradecane) Chi-Ming Che and Kwok-Yin Wong, pp 2065 DOI:10.1039/DT9890002065

Chelate-stabilised tetrahydrofuran complexes of platinum(II). Crystal structure of [PtCl(Ph2PCH2C4H7O)(Ph2PCH2C4H7O)][PF6] Nathaniel W. Alcock, Andrew W. G. Platt and Paul G. Pringle, pp 2069 DOI:10.1039/DT9890002069

Activation of a vinyl carbon-hydrogen bond in a tris(pyrazolyl)boratoiridium complex. The X-ray crystal structure of [IrH{HB(pz)3}(-C8H13)(2-C8H14)] Maria J. Fernández, Maria J. Rodriguez, Luis A. Oro and Fernando J. Lahoz, pp 2073 DOI:10.1039/DT9890002073

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX039

Issue 11

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX041

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP041

Binuclear copper(II) complexes of new dinucleating ligands with a pyrazolate group as an endogenous bridge. Effects of exogenous azide and acetate bridges on magnetic properties Toshiro Kamiusuki, Hisashi kawa, Eiji Kitaura, Masayuki Koikawa, Naohide Matsumoto, Sigeo Kida and Hiroki Oshio, pp 2077 DOI:10.1039/DT9890002077

Crystal structures and magnetic properties of bi- and tetra-nuclear copper(II) complexes of 2,6-diformyl-4-methylphenol di(benzoylhydrazone) Masatomi Sakamoto, Shoichi Itose, Tomitaro Ishimori, Naohide Matsumoto, Hisashi kawa and Sigeo Kida, pp 2083 DOI:10.1039/DT9890002083

Synthesis, structure, and redox properties of dicopper(II,II) complexes of N-(2-hydroxyphenyl)salicylamide and homologues. Facile oxidation to dicopper-(II,III) and -(III,III) species; crystal structure of bis(tetrabutylphosphonium) bis{[(2-oxidobenzoyl)(2-oxidophenyl)amido(3-)-NO2,µ-O2]cuprate(II)} Masayuki Koikawa, Hisashi kawa, Naohide Matsumoto, Mikio Gotoh, Sigeo Kida and Takamitsu Kohzuma, pp 2089 DOI:10.1039/DT9890002089

Crystal structure and magnetic properties of the heterobinuclear complex [(CH3CN)LNi(mnt)Cu(mnt)]·CH3CN (L = tetrabenzo[b,f,j,n][1,5,9,13]tetra-azacyclohexadecine and mnt = maleonitriledithiolate) Zhuang Jin Zhong, Naohide Matsumoto, Hisashi kawa and Sigeo Kida, pp 2095 DOI:10.1039/DT9890002095

Studies of the oxidative addition of some substrates containing carbon-heteroatom bonds to some tungsten and platinum complexes Birgit Schiøtt and Karl Anker Jørgensen, pp 2099 DOI:10.1039/DT9890002099

Spectral intensity and charge distributions in the tetrahedral chromophores, bis(3-amino-2-methylpropane-24thiolato)- and diacetatobis(ethylenethiourea)-cobalt(II) Melinda J. Duer and Malcolm Gerloch, pp 2109 DOI:10.1039/DT9890002109

Complexes of technetium, rhenium, and rhodium with sexidentate Schiff-base ligands Geoffrey Hunter and Neil Kilcullen, pp 2115 DOI:10.1039/DT9890002115

Mechanism and energetics of reductive elimination of ethane from some tetramethylplatinum(IV) complexes Sujit Roy, Richard J. Puddephatt and John D. Scott, pp 2121 DOI:10.1039/DT9890002121

Mesitylgold(I) complexes. Crystal structures of NEt4[Au(mes)CI] and [N(PPh3)2][(mes)Au(CN)Au(mes)] Rafael Usón, Antonio Laguna, Eduardo J. Fernández, M. Elena Ruiz-Romero, Peter G. Jones and Jürgen Lautner, pp 2127 DOI:10.1039/DT9890002127

Hydrogen scrambling processes in [Ta(-C5Me5)(-C5H5){(µ-H)2BH2}]: a surprising observation Malcolm L. H. Green and Luet-Lok Wong, pp 2133 DOI:10.1039/DT9890002133

Electronic structure of transition-metal indenyl compounds: a He I and He II photoelectron spectroscopic study of [Mn(5-C9H7)(CO)3], [ Fe(5-C9H7)2], [Ru(5-C9H7)2], and [Ru(5-C9H7)-C5Me5)] Neil S. Crossley, Jennifer C. Green, Attila Nagy and Graham Stringer, pp 2139 DOI:10.1039/DT9890002139

Synthesis and X-ray crystal structure of tetra(2- methylphenyl)molybdenum(IV), Mo(2-MeC6H4)4. Redox chemistry of M(2-MeC6H4)4 compounds of molybdenum, rhenium, ruthenium, and osmium John Arnold, Geoffrey Wilkinson, Bilquis Hussain and Michael B. Hursthouse, pp 2149 DOI:10.1039/DT9890002149

Stereochemical role of lone pairs in main-group elements. Part 4. The crystal structure at 120 K of bis(1,4,7,10,13-pentaoxacyclopentadecane)tin(II) bis[trichlorostannate(II)], confirming the sterically inactive tin lone pair Edward Hough, David G. Nicholson and Asha K. Vasudevan, pp 2155 DOI:10.1039/DT9890002155

Low-valent isocyanide complexes and clusters of palladium and platinum. Crystal structure of [Pt{C(NR)N(R)C(NR}(RNC)2](R = 2,6-Me2C6H3) Yasuhiro Yamamoto and Hiroshi Yamazaki, pp 2161 DOI:10.1039/DT9890002161

Interaction of benzo-1,3-thiazoline-2-thione and related ligands with copper(II) salts and the single-crystal X-ray structure of µ-[1,2-bis-(diphenylphosphino)ethane]-bis{(benzo-1,3-thiazole-2-thiolato-S)[1,2-bis(diphenylphosphinoethane]copper(I)} Eric W. Ainscough, Edward N. Baker, Alistair G. Bingham, Andrew M. Brodie and Clyde A. Smith, pp 2167 DOI:10.1039/DT9890002167

Synthesis and crystal structures of three four-membered ring compounds containing PN2Ti skeletons Michael Witt, Herbert W. Roesky, Dietmar Stalke, Frank Pauer, Thomas Henkel and George M. Sheldrick, pp 2173 DOI:10.1039/DT9890002173

Preparation and properties of [M(S2N2H)Cl(L)](M = Pt, L = PMe2Ph or C2H4; M = Pd, L = PMe2Ph), [Pt(S3N)Cl(PMe2H)], and corresponding 15N-enriched complexest Jennifer M. Jolliffe, Paul F. Kelly and J. Derek Woollins, pp 2179 DOI:10.1039/DT9890002179

Characterisation of tridentate macrocyclic complexes of molybdenum(0) with tetra-aza macrocycles. Crystal structure of [ Mo(CO)3L1](L1= C-meso-5,5,7,12,12,14-hexamethyl-1,4,8,11 -tetra-azacyclotetradecane) Robert W. Hay, Lain Fraser and George Ferguson, pp 2183 DOI:10.1039/DT9890002183

Transition metal-cyanocarbon chemistry. Part 8. Cyano-substituted buta-1,3- dienylidene bridged di-iron complexes from unprecedented cyanoalkyne insertion into the carbon-hydrogen bond of a bridging alkenylidene ligand Michel Etienne and Jacques E. Guerchais, pp 2187 DOI:10.1039/DT9890002187

Vibrational study of ionic association in aprotic solvents. Part 12. Isothiocyanate M(NCS) complexes of non-transition-metal ions Martial Chabanel, Abderrahim Bencheikh and Danuta Puchalska, pp 2193 DOI:10.1039/DT9890002193

Iron carbene complexes. Part 3. Aminolysis of di-iron alkoxycarbene complexes with ammonia and dimethylamine. X-Ray crystal structure of [Fe2(µ-SPh)2(CO)5{C(NMe2)Ph}] Jan L. M. Dillen, Marthie M. van Dyk and Simon Lotz, pp 2199 DOI:10.1039/DT9890002199

Electrochemistry of the quasi-reversible bis[2-ethyl-2-hydroxybutanoato(2-)]-oxochromate-(V) and -(IV) and bis[2-hydroxy-2-methylbutanoato(2-)]oxochromate-(V) and -(IV) redox couples and the crystal and molecular structure of sodium bis[2-ethyl-2-hydroxybutanoato(2-)]oxochromate(V)sesquihydrate Robert J. Judd, Trevor W. Hambley and Peter A. Lay, pp 2205 DOI:10.1039/DT9890002205

Stepwise conversion of [Os(CF3CO2)2(CO)4] into [Os(pyS)2(CO)2]: X-ray crystal structures of the complexes [Os(pyS)2(CO)x] where x= 2 or 3 and pyS is the pyridine-2-thionato ligand Antony J. Deeming, M. Nafees Meah, Neil P. Randle and Kenneth I. Hardcastle, pp 2211 DOI:10.1039/DT9890002211

Lanthanide ion complexes of the calixarenes. Part 4. Double inclusion by p-t-butylcalix[4]arene (H4L). Crystal structures of [Eu2(HL)2(dmf)4].7dmf (dmf = dimethylformamide) and H4L.dmso (dmso = dimethyl sulphoxide) Brenda M. Furphy, Jack MacB. Harrowfield, Mark I. Ogden, Brian W. Skelton, Allan H. White and Faye R. Wilner, pp 2217 DOI:10.1039/DT9890002217

Investigations of tin(II) halide aqueous solutions and solvent extracts by 119Sn nuclear magnetic resonance spectroscopy: characterisation of the trihalogenostannate(II) anions [SnX3]-, [SnX2Y]-, and [SnX(Y)Z]-(X, Y, or Z = Cl, Br, or I) Jan M. Coddington and Michael J. Taylor, pp 2223 DOI:10.1039/DT9890002223

The 4-phenyl-1,2,3,5-dithiadiazole complex [Fe2(CO)6(PhCN2S2)]: its preparation, crystal structure, and an extended-Hückel molecular-orbital study of the bonding Arthur J. Banister, Ian B. Gorrell, William Clegg and Karl Anker Jørgensen, pp 2229 DOI:10.1039/DT9890002229

Kinetics of reactions of hydrogen with [Os3(CO)11(NCMe)] and [Os3(CO)10(NCMe)2] Robert H. E. Hudson, Anthony J. Poë, Clifford N. Sampson and Andre Siegel, pp 2235 DOI:10.1039/DT9890002235

Synthesis of arylthallium complexes using organomercury compounds. Crystal and molecular structures of [NMe4][Tl(C6H4NNPh-2)Cl3] and [Tl(C6H4CH2-NMe2-2)Cl2] Jose Vicente, J. Antonio Abad, Juan F. Gutierrez-Jugo and Peter G. Jones, pp 2241 DOI:10.1039/DT9890002241

Complex-forming properties of L--alaninehydroxamic acid (2-amino-N-hydroxypropanamide) Etelka Farkas, József Szöke, Tamás Kiss, Henryk Kozlowski and Wojciech Bal, pp 2247 DOI:10.1039/DT9890002247

Bonding in clusters. Part 10. The nature of the BH groups in closo-borane anions. A study by vibrational spectroscopy, electronic spectroscopy for chemical analysis, and ab initio computation Paul Brint, Benchang Sangchakr, Patrick W. Fowler and Vincent J. Weldon, pp 2253 DOI:10.1039/DT9890002253

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 92. Synthesis of alkynylmethylidyne-molybdenum and -tungsten complexes and their reactions with [Co2(CO)8] and [Mo2(CO)6(-C5H5)2] Ian J. Hart, Anthony F. Hill and F. Gordon A. Stone, pp 2261 DOI:10.1039/DT9890002261

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 93. Synthesis of heteropolynuclear metal compounds with chains of seven to eleven metal atoms; crystal structure of [Mo2W3Pt6(µ3-CMe)3(µ3-CC6H4Me-4)2(CO)10(PMe2Ph)4(-C5H5)5] Simon J. Davies, Judith A. K. Howard, Rupert J. Musgrove and F. Gordon A. Stone, pp 2269 DOI:10.1039/DT9890002269

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 94. Synthesis of di- and tri-metal compounds via the reagents [M(C-CCBut)(CO)2(-C5H5)](M = Mo or W) Sheena J. Etches, Ian J. Hart and F. Gordon A. Stone, pp 2281 DOI:10.1039/DT9890002281

Chemistry of polynuclear metal complexes with bridging carbene or carbyne ligands. Part 95. Synthesis and crystal structures of [W2RuPt(µ-CC6H4Me-4)(µ3-CC6H4Me-4)(CO)6(PMe2Ph)(-C5H5)2] and [W2Ru2Pt2(µ3-CC6H4Me-4)2(µ-CO)2(CO)9(-C5H5)2] Simon J. Davies, Judith A. K. Howard, Massimino U. Pilotti and F. Gordon A. Stone, pp 2289 DOI:10.1039/DT9890002289

Insertion of CS2 into Ag-S bonds. Preparations and crystal structures of[{[Ag(SC6H2Pri3-2,4,6)]4·CHCl3}n] and its insertion product with CS2, [{Ag(S2CSC6H2Pri3-2,4,6)}2{Ag(SC6H2Pri3-2,4,6)}6]·8CHCl3 Kaluo Tang, Jianping Yang, Qingchuan Yang and Youqi Tang, pp 2297 DOI:10.1039/DT9890002297

A convenient route to binuclear osmium(I) complexes containing diphosphine and arsinophosphine ligands. X-Ray crystal structure of [Os2(MeCO2)2(CO)4(dppm)2] Eric Singleton, Michael O. Albers and Margot M. de V. Steyn, pp 2303 DOI:10.1039/DT9890002303

Unusual chelating properties of the ligand 1,8-bis(3,5-dimethyl-1-pyrazolyl)-3,6-dithiaoctane (bddo). Crystal structures of Ni(bddo)(NCS)2, Zn(bddo)(NCS)2 and Cd2(bddo)(NCS)4 Willem G. Haanstra, Willem L. Driessen, Jan Reedijk, Urho Turpeinen and Reijo Hämäläinenn, pp 2309 DOI:10.1039/DT9890002309

Platinum metal complexes of potentially chelating alkene thioether and selenoether ligands: the synthesis and dynamic nuclear magnetic resonance study of [MX2{E[(CH2)nCRCR2]2}](M = Pt or Pd; X = Cl, Br, or I; E = S or Se; n= 2 or 3; R = H or Me) and the X-ray crystal structure of cis-di-iodo-(5-thianona-1,8-diene)platinum(II), [PtI2{S[(CH2)2CHCH2]2}] Edward W. Abel, David G. Evans, Julian R. Koe, Vladimir Sik, Michael B. Hursthouse and Paul A. Bates, pp 2315 DOI:10.1039/DT9890002315

Reactions of chloro(triphenylphosphine)gold(I) and [µ-l,2-bis(diphenylphosphine)ethane]-bis[bromogold(I)] with oxopurine bases. Molecular and crystal structure and bonding of (theophyllinato)(triphenylphosphine)gold(I) Enrique Colacio, Antonio Romerosa, Jose Ruiz, Pascual Román, Juan M. Gutiérrez-Zorrilla and Martin Martínez-Ripoll, pp 2323 DOI:10.1039/DT9890002323

Notes. Oxidative addition of dibenzoyl peroxide on metallic copper. The crystal structure of [{Cu(C6H5CO2)2(py)}2] Gábor Speier and Vilmos Fülöp, pp 2331 DOI:10.1039/DT9890002331

Preparation of the ordered perovskite (SrLa)(MgMo)O6 and its physico-chemical characterization Jin-Ho Choy and Seung-Tae Hong, pp 2335 DOI:10.1039/DT9890002335

Crystal and molecular structure of a lattice adduct, HgPh2·2[Hg(SCN)2(PPh3)2]: an unusual case of two-and four-co-ordinate mercury in the same unit cell Tarlok S. Lobana, Maninderjeet K. Sandhu, David C. Povey, Gallienus W. Smith and Vijayalakshmi Ramdas, pp 2339 DOI:10.1039/DT9890002339

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX043

Issue 12

Front cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FX045

Contents pages J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900FP045

Supplement. Tables of bond lengths determined by X-ray and neutron diffraction. Part 2. Organometallic compounds and co-ordination complexes of the d- and f-block metals A. Guy Orpen, Lee Brammer, Frank H. Allen, Olga Kennard, David G. Watson and Robin Taylor, pp S1 DOI:10.1039/DT98900000S1

Mixed-metal carbido carbonyl clusters. Part 4. Synthesis and structural characterization of [Rh6C(CO)13{Au2(PPh3)2}] Alessandro Fumagalli, Secondo Martinengo, Vincenzo G. Albano, Dario Braga and Fabrizia Grepioni, pp 2343 DOI:10.1039/DT9890002343

Cyclic metallasiloxane compounds of TiIV and ZrIV. X-Ray crystal structures of a cis-bis(pyridine) bis(cyclosiloxy)titanate and a pyridinelithiated tris(cyclosiloxy)zirconate M. Altaf Hossain, Michael B. Hursthouse, Ali Ibrahim, Muhammed Mazid and Alice C. Sullivan, pp 2347 DOI:10.1039/DT9890002347

Reactivity of new osmium dihydrides with arenediazonium cations: preparation and properties of bis(aryldiazene) and mono(aryldiazenido) complexes. A comparison with analogous iron and ruthenium derivatives Gabriele Albertin, Stefano Antoniutti and Emilio Bordignon, pp 2353 DOI:10.1039/DT9890002353

Functionalized amino acid complexation to a cobalt(III) complex of (2R,5R,8R,11R)-2,5,8,11-tetraethyl-1,4,7,10-tetra-azacyclododecane. Crystal structures of complexes containing (R)- or (S)-serine and (R)--methylserine, and release of amino acid from the complexes Sei Tsuboyama, Shigeru Miki, Tamiko Chijimatsu, Kaoru Tsuboyama and Tosio Sakurai, pp 2359 DOI:10.1039/DT9890002359

Photochemical reactivity of 2[IrIIIHCl2(PPri3)2]·H2. Formation of monohydrido isomers of IrIII and evidence of photoinduced oxidative addition of H2, to IrIII Paola Bergamini, Silvana Sostero, Orazio Traverso, Pasquale Mura and Annalaura Segre, pp 2367 DOI:10.1039/DT9890002367

Aqueous chemistry and thermodynamic modelling of CaO-SiO2-H2O gels Alan Atkinson, John A. Hearne and Clive F. Knights, pp 2371 DOI:10.1039/DT9890002371

Reactions of 1-alkynes with trans-[ReCl(N2)(Ph2PCH2CH2PPh2)2]: preparation of the vinylidene compounds trans-[ReCl(CCHR)(Ph2PCH2CH2PPh2)2](R = alkyl or aryl) and X-ray structure of trans-[ReCl(CCHPh)(Ph2PCH2CH2PPh2)2] Armando J. L. Pombeiro, Sílvia S. P. R. Almeida, M. Fátima C. G. Silva, John C. Jeffrey and Raymond L. Richards, pp 2381 DOI:10.1039/DT9890002381

The chemistry of dinitrogen residues. Part 7. Hydrazido(1-)- and N,N-dimethylhydroxylaminato(1-)-complexes of titanium(IV) David L. Hughes, Manuel Jimenez-Tenorio, G. Jeffery Leigh and David G. Walker, pp 2389 DOI:10.1039/DT9890002389

Optical absorption and magnetic circular dichroism studies of hydrogen, copper(II), zinc(II), nickel(II), and cobalt(II) crown ether-substituted monomeric and dimeric phthalocyanines Zbigniew Gasyna, Nagao Kobayashi and Martin J. Stillman, pp 2397 DOI:10.1039/DT9890002397

Substituted cyclopentadienyl complexes. Part 4. The catalysed synthesis and proton nuclear magnetic resonance spectra of [Ru(5-C5H4Me)(CO)(L)I] and [Ru(5-C9H7)(CO)(L)I](L = phosphine or isocyanide) and the crystal structure determination of [Ru(5-C9H7)(CO){P(CH2Ph)3}I] Mohamed S. Loonat, Laurence Carlton, Jan C. A. Boeyens and Neil J. Coville, pp 2407 DOI:10.1039/DT9890002407

Cyclometallation of unsaturated carboxylic acids by pentamethylcyclopentadienyl-rhodium and -iridium complexes. Crystal structures of [(C5Me5)Ir(CPhCHCO-O)(Me2SO)] and [(C5Me5)Ir(CPhCHCO-OMe)I]+ Glenn J. Sunley, Pamela del C. Menanteau, Harry Adams, Neil A. Bailey and Peter M. Maitlis, pp 2415 DOI:10.1039/DT9890002415

Organoborazines. Part 2. Synthesis of alkenyltriborazines Logan A. Jackson and Christopher W. Allen, pp 2423 DOI:10.1039/DT9890002423

Copper anti-inflammatory drugs in rheumatoid arthritis. Part 2. A potentiometric and spectroscopic study of copper(II) polyaminodicarboxylate complexes Graham E. Jackson and Mark J. Kelly, pp 2429 DOI:10.1039/DT9890002429

Synthesis, spectroscopic, electrochemical, and magnetic properties of dimolybdenum(II,II), diruthenium-(II,III) and -(II,II) complexes containing bridging aspirinate (2-acetoxybenzoate) ligands Andrew Carvill, Paula Higgins, G. Malachy McCann, Helen Ryan and Anthony Shiels, pp 2435 DOI:10.1039/DT9890002435

Complexes of lead(II) bis(O,O-dialkyl dithiophosphates) with nitrogen donor ligands. The crystal structures of Pb[S2P(OEt)2]2·en (en = ethylenedianine), Pb[S2P(OEt)2]2·bipy (bipy = 2,2-bipyridine), and {Pb[S2P(OEt)2]2}2·en Philip G. Harrison, Michael G. Begley, Thakor Kikabhai, Andrew T. Steel and Mutasim I. Khalil, pp 2443 DOI:10.1039/DT9890002443

Notes. Preparation and X-ray crystal structure of [Ru3RhH3(CO)12] Jouni Pursiainen and Tapani A. Pakkanen, pp 2449 DOI:10.1039/DT9890002449

On the existence of the anion trichloro(-cyclopentadienyl)titanate(1-). Crystal structure of the salt [Co(C5H5)2][Ti(C5H5)Cl3] David L. Hughes, Manuel Jimenez-Tenorio and G. Jeffery Leigh, pp 2453 DOI:10.1039/DT9890002453

Solid-state high-resolution carbon-13 magnetic resonance spectra of dithioacetate complexes of platinum, palladium, and nickel Setsuko Kinoshita, Hisanobu Wakita and Masahiro Yamashita, pp 2457 DOI:10.1039/DT9890002457

Additions and corrections Ramgopal Bhattacharyya, Nabanita Ghosh and Gobinda P. Bhattacharjee, pp 2461 DOI:10.1039/DT9890002461

Back cover J. Chem. Soc., Dalton Trans. DOI:10.1039/DT98900BX047