Introduction and Survey |
Prolog / 1.1: |
From Werner to the new transition metal chemistry / 1.1.1: |
Prior to about 1963 / 1.1.2: |
How It All Began / 1.2: |
Rhenium chemistry from 1963 to 1965 / 1.2.1: |
The recognition of the quadruple bond / 1.2.2: |
Initial work on other elements / 1.2.3: |
An Overview of the Multiple Bonds / 1.3: |
A qualitative picture of the quadruple bond / 1.3.1: |
Bond orders less than four / 1.3.2: |
Oxidation states / 1.3.3: |
Growth of the Field / 1.4: |
Going Beyond Two / 1.5: |
Complexes of the Group 5 Elements |
General Remarks / 2.1: |
Divanadium Compounds / 2.2: |
Triply-bonded divanadium compounds / 2.2.1: |
Metal-metal vs metal-ligand bonding / 2.2.2: |
Divanadium compounds with the highly reduced V23+ core / 2.2.3: |
Diniobium Compounds / 2.3: |
Diniobium paddlewheel complexes / 2.3.1: |
Diniobium compounds with calix[4]arene ligands and related species / 2.3.2: |
Tantalum / 2.4: |
Chromium Compounds |
Dichromium Tetracarboxylates / 3.1: |
History and preparation / 3.1.1: |
Properties of carboxylate compounds / 3.1.2: |
Unsolvated Cr2(O2CR)4 compounds / 3.1.3: |
Other Paddlewheel Compounds / 3.2: |
The first 'supershort' bonds / 3.2.1: |
2-Oxopyridinate and related compounds / 3.2.2: |
Carboxamidate compounds / 3.2.3: |
Amidinate compounds / 3.2.4: |
Guanidinate compounds / 3.2.5: |
Miscellaneous Dichromium Compounds / 3.3: |
Compounds with intramolecular axial interactions / 3.3.1: |
Compounds with Cr-C bonds / 3.3.2: |
Other pertinent results / 3.3.3: |
Concluding Remarks / 3.4: |
Molybdenum Compounds |
Dimolybdenum Bridged by Carboxylates or Other O,O Ligands / 4.1: |
General remarks / 4.1.1: |
Mo2(O2CR)4 compounds / 4.1.2: |
Other compounds with bridging carboxyl groups / 4.1.3: |
Paddlewheels with other O,O anion bridges / 4.1.4: |
Paddlewheel Compounds with O,N, N,N and Other Bridging Ligands / 4.2: |
Compounds with anionic O,N bridging ligands / 4.2.1: |
Compounds with anionic N,N bridging ligands / 4.2.2: |
Compounds with miscellaneous other anionic bridging ligands / 4.2.3: |
Non-Paddlewheel Mo24+ Compounds / 4.3: |
Mo2X84- and Mo2X6(H2O)22- compounds / 4.3.1: |
[Mo2X8H]3- compounds / 4.3.2: |
Other aspects of dimolybdenum halogen compounds / 4.3.3: |
M2X4L4 and Mo2X4(LL)2 compounds / 4.3.4: |
Cationic complexes of Mo24+ / 4.3.5: |
Complexes of Mo24+ with macrocyclic, polydentate and chelate ligands / 4.3.6: |
Alkoxide compounds of the types Mo2(OR)4L4 and Mo2(OR)4(LL)2 / 4.3.7: |
Other Aspects of Mo24+ Chemistry / 4.4: |
Cleavage of Mo24+ compounds / 4.4.1: |
Redox behavior of Mo24+ compounds / 4.4.2: |
Hydrides and organometallics / 4.4.3: |
Heteronuclear Mo-M compounds / 4.4.4: |
An overview of Mo-Mo bond lengths in Mo24+ compounds / 4.4.5: |
Higher-order Arrays of Dimolybdenum Units / 4.5: |
General concepts / 4.5.1: |
Two linked pairs with carboxylate spectator ligands / 4.5.2: |
Two linked pairs with nonlabile spectator ligands / 4.5.3: |
Squares: four linked pairs / 4.5.4: |
Loops: two pairs doubly linked / 4.5.5: |
Rectangular cyclic quartets / 4.5.6: |
Other structural types / 4.5.7: |
Tungsten Compounds |
Multiple Bonds in Ditungsten Compounds / 5.1: |
The W24+ Tetracarboxylates / 5.2: |
W24+ Complexes Containing Anionic Bridging Ligands Other Than Carboxylate / 5.3: |
W24+ Complexes without Bridging Ligands / 5.4: |
Compounds coordinated by only anionic ligands / 5.4.1: |
Compounds coordinated by four anionic ligands and four neutral ligands / 5.4.2: |
Multiple Bonds in Heteronuclear Dimetal Compounds of Molybdenum and Tungsten / 5.5: |
Paddlewheel Compounds with W25+ or W26+ Cores / 5.6: |
X3 M ≡ MX3 Compounds of Molybdenum and Tungsten |
Introduction / 6.1: |
Homoleptic X3M ≡ MX3 Compounds / 6.2: |
Synthesis and characterization of homoleptic M2X6 compounds / 6.2.1: |
Bonding in M2X6 compounds / 6.2.2: |
X3M ≡ MX3 Compounds as Molecular Precursors to Extended Solids / 6.2.3: |
M2X2(NMe2)4 and M2X4(NMe2)2 Compounds / 6.3: |
Other M2X2Y4, M2X6-n Yn and Related Compounds / 6.4: |
Mo2X2(CH2SiMe3)4 compounds / 6.4.1: |
1,2-M2R2(NMe2)4 compounds and their derivatives / 6.4.2: |
M4 Complexes: Clusters or Dimers? / 6.5: |
Molybdenum and tungsten twelve-electron clusters M4(OR)12 / 6.5.1: |
M4X4(OPri)8 (X = Cl, Br) and Mo4Br3(OPri)9 / 6.5.2: |
W4 (p-tolyl)2 (OPri)10 / 6.5.3: |
W4O(X)(OPri)9, (X = Cl or OPri) / 6.5.4: |
K(18-crown-6)2Mo4(μ4-H)(OCH2But)12 / 6.5.5: |
Linked M4 units containing localized MM triple bonds / 6.5.6: |
M2X6L, M2X6L2 and Related Compounds / 6.6: |
Mo2(CH2Ph)2(OPri)4(PMe3) and [Mo2(OR)7]- / 6.6.1: |
M2(OR)6L2 compounds and their congeners / 6.6.2: |
Amido-containing compounds / 6.6.3: |
Mo2Br2(CHSiMe3)2(PMe3)4 / 6.6.4: |
Calix[4]arene complexes / 6.6.5: |
Triple Bonds Uniting Five- and Six-Coordinate Metal Atoms / 6.7: |
Redox Reactions at the M26+ Unit / 6.8: |
Organometallic Chemistry of M2(OR)6 and Related Compounds / 6.9: |
Carbonyl adducts and their products / 6.9.1: |
Isocyanide complexes / 6.9.2: |
Reactions with alkynes / 6.9.3: |
Reactions with C≡N bonds / 6.9.4: |
Reactions with C=C bonds / 6.9.5: |
Reactions with H2 / 6.9.6: |
Reactions with organometallic compounds / 6.9.7: |
(η-C5H4R)2W2X4 compounds where R = Me, Pri and X = Cl, Br / 6.9.8: |
Conclusion / 6.10: |
Technetium Compounds |
Synthesis and Properties of Technetium / 7.1: |
Preparation of Dinuclear and Polynuclear Technetium Compounds / 7.2: |
Bonds of Order 4 and 3.5 / 7.3: |
Tc26+ and Tc25+ Carboxylates and Related Species with Bridging Ligands / 7.4: |
Bonds of Order 3 / 7.5: |
Hexanuclear and Octanuclear Technetium Clusters / 7.6: |
Rhenium Compounds |
The Last Naturally Occurring Element to Be Discovered / 8.1: |
Synthesis and Structure of the Octachlorodirhenate(III) Anion / 8.2: |
Synthesis and Structure of the Other Octahalodirhenate(III) Anions / 8.3: |
Substitution Reactions of the Octahalodirhenate(III) Anions that Proceed with Retention of the Re26+ Core / 8.4: |
Monodentate anionic ligands / 8.4.1: |
The dirhenium(III) carboxylates / 8.4.2: |
Other anionic ligands / 8.4.3: |
Neutral ligands / 8.4.4: |
Dirhenium Compounds with Bonds of Order 3.5 and 3 / 8.5: |
The first metal-metal triple bond: Re2Cl5(CH3SCH2CH2SCH3)2 and related species / 8.5.1: |
Simple electron-transfer chemistry involving the octahalodirhenate(III) anions and related species that contain quadruple bonds / 8.5.2: |
Oxidation of [Re2X8]2- to the nonahalodirhenate anions [Re2X9]n- (n = 1 or 2) / 8.5.3: |
Re25+ and Re24+ halide complexes that contain phosphine ligands / 8.5.4: |
Other Re25+ and Re24+ complexes / 8.5.5: |
Other dirhenium compounds with triple bonds / 8.5.6: |
Dirhenium Compounds with Bonds of Order Less than 3 / 8.6: |
Cleavage of Re-Re Multiple Bonds by o-donor and π-acceptor Ligands / 8.7: |
σ-Donor ligands / 8.7.1: |
Jπ-Acceptor ligands / 8.7.2: |
Other Types of Multiply Bonded Dirhenium Compounds / 8.8: |
Postscript on Recent Developments / 8.9: |
Ruthenium Compounds |
Ru25+ Compounds / 9.1: |
Ru25+ compounds with O,O′-donor bridging ligands / 9.2.1: |
Ru25+ compounds with N,O-donor bridging ligands / 9.2.2: |
Ru25+ compounds with N,N′-donor bridging ligands / 9.2.3: |
Ru24+ Compounds / 9.3: |
Ru24+ compounds with O,O′-donor bridging ligands / 9.3.1: |
Ru24+ compounds with N,O-donor bridging ligands / 9.3.2: |
Ru24+ compounds with N,N′-donor bridging ligands / 9.3.3: |
Ru26+ Compounds / 9.4: |
Ru26+ compounds with O,O′-donor bridging ligands / 9.4.1: |
Ru26+ compounds with N,N′-donor bridging ligands / 9.4.2: |
Compounds with Macrocyclic Ligands / 9.5: |
Applications / 9.6: |
Catalytic activity / 9.6.1: |
Biological importance / 9.6.2: |
Osmium Compounds |
Syntheses, Structures and Reactivity of Os26+ Compounds / 10.1: |
Syntheses and Structures of Os25+ Compounds / 10.2: |
Syntheses and Structures of Other Os2 Compounds / 10.3: |
Magnetism, Electronic Structures, and Spectroscopy / 10.4: |
Iron, Cobalt and Iridium Compounds / 10.5: |
Di-iron Compounds / 11.1: |
Dicobalt Compounds / 11.3: |
Tetragonal paddlewheel compounds / 11.3.1: |
Trigonal paddlewheel compounds / 11.3.2: |
Dicobalt compounds with unsupported bonds / 11.3.3: |
Compounds with chains of cobalt atoms / 11.3.4: |
Di-iridium Compounds / 11.4: |
Paddlewheel compounds and related species / 11.4.1: |
Unsupported Ir-Ir bonds / 11.4.2: |
Other species with Ir-Ir bonds / 11.4.3: |
Iridium blues / 11.4.4: |
Rhodium Compounds |
Dirhodium Tetracarboxylato Compounds / 12.1: |
Preparative methods and classification / 12.2.1: |
Structural studies / 12.2.2: |
Other Dirhodium Compounds Containing Bridging Ligands / 12.3: |
Complexes with fewer than four carboxylate bridging groups / 12.3.1: |
Complexes supported by hydroxypyridinato, carboxamidato and other (N, O) donor monoanionic bridging groups / 12.3.2: |
Complexes supported by amidinato and other (N, N) donor bridging groups / 12.3.3: |
Complexes supported by sulfur donor bridging ligands / 12.3.4: |
Complexes supported by phosphine and (P, N) donor bridging ligands / 12.3.5: |
Complexes supported by carbonate, sulfate and phosphate bridging groups / 12.3.6: |
Dirhodium Compounds with Unsupported Rh-Rh Bonds / 12.4: |
The dirhodium(II) aquo ion / 12.4.1: |
The [Rh2(NCR)10]4+ cations / 12.4.2: |
Complexes with chelating and macrocyclic nitrogen ligands / 12.4.3: |
Other Dirhodium Compounds / 12.5: |
Complexes with isocyanide ligands / 12.5.1: |
Rhodium blues / 12.5.2: |
Reactions of Rh24+ Compounds / 12.6: |
Oxidation to Rh25+ and Rh26+ species / 12.6.1: |
Cleavage of the Rh-Rh bond / 12.6.2: |
Applications of Dirhodium Compounds / 12.7: |
Catalysis / 12.7.1: |
Supramolecular arrays based on dirhodium building blocks / 12.7.2: |
Biological applications of dirhodium compounds / 12.7.3: |
Photocatalytic reactions / 12.7.4: |
Other applications / 12.7.5: |
Chiral Dirhodium(II) Catalysts and Their Applications |
Synthetic and Structural Aspects of Chiral Dirhodium(II) Carboxamidates / 13.1: |
Synthetic and Structural Aspects of Dirhodium(II) Complexes Bearing Orthometalated Phosphines / 13.3: |
Dirhodium(II) Compounds as Catalysts / 13.4: |
Catalysis of Diazo Decomposition / 13.5: |
Chiral Dirhodium(II) Carboxylates / 13.6: |
Chiral Dirhodium(II) Carboxamidates / 13.7: |
Catalytic Asymmetric Cyclopropanation and Cyclopropenation / 13.8: |
Intramolecular reactions / 13.8.1: |
Intermolecular reactions / 13.8.2: |
Cyclopropenation / 13.8.3: |
Macrocyclization / 13.8.4: |
Metal Carbene Carbon-Hydrogen Insertion / 13.9: |
Catalytic Ylide Formation and Reactions / 13.9.1: |
Additional Transformations of Diazo Compounds Catalyzed by Dirhodium(II) / 13.11: |
Silicon-Hydrogen Insertion / 13.12: |
Nickel, Palladium and Platinum Compounds |
Dinickel Compounds / 14.1: |
Dipalladium Compounds / 14.3: |
A singly bonded Pd26+ species / 14.3.1: |
Chemistry of Pd25+ and similar species / 14.3.2: |
Other compounds with Pd-Pd interactions / 14.3.3: |
Diplatinum Compounds / 14.4: |
Complexes with sulfate and phosphate bridges / 14.4.1: |
Complexes with pyrophosphite and related ligands / 14.4.2: |
Complexes with carboxylate, formamidinate and related ligands / 14.4.3: |
Complexes containing monoanionic bridging ligands with N,O and N,S donor sets / 14.4.4: |
Unsupported Pt-Pt bonds / 14.4.5: |
Dinuclear Pt25+ species / 14.4.6: |
The platinum blues / 14.4.7: |
Other compounds |
Extended Metal Atom Chains |
Overview / 15.1: |
EMACs of Chromium / 15.2: |
EMACs of Cobalt / 15.3: |
EMACs of Nickel and Copper / 15.4: |
EMACs of Ruthenium and Rhodium / 15.5: |
Other Metal Atom Chains / 15.6: |
Physical, Spectroscopic and Theoretical Results |
Structural Correlations / 16.1: |
Bond orders and bond lengths / 16.1.1: |
Internal rotation / 16.1.2: |
Axial ligands / 16.1.3: |
Comparison of second and third transition series homologs / 16.1.4: |
Disorder in crystals / 16.1.5: |
Rearrangements of M2X8 type molecules / 16.1.6: |
Diamagnetic anisotropy of M-M multiple bonds / 16.1.7: |
Thermodynamics / 16.2: |
Thermochemical data / 16.2.1: |
Bond energies / 16.2.2: |
Electronic Structure Calculations / 16.3: |
Background / 16.3.1: |
[M2X8]n- and M2X4(PR3)4 species / 16.3.2: |
The M2(O2CR)4 (M = Cr, Mo, W) molecules / 16.3.3: |
M2(O2CR)4R′2 (M = Mo, W) compounds / 16.3.4: |
Dirhodium species / 16.3.5: |
Diruthenium compounds / 16.3.6: |
M2X6 molecules (M = Mo, W) / 16.3.7: |
Other calculations / 16.3.8: |
Electronic Spectra / 16.4: |
Details of the δ manifold of states / 16.4.1: |
Observed δ → δ* transitions / 16.4.2: |
Other electronic absorption bands of Mo2, W2, Tc2 and Re2 species / 16.4.3: |
Spectra of Rh2, Pt2, Ru2 and Os2 compounds / 16.4.4: |
CD and ORD spectra / 16.4.5: |
Excited state distortions inferred from vibronic structure / 16.4.6: |
Emission spectra and photochemistry / 16.4.7: |
Photoelectron Spectra / 16.5: |
Paddlewheel molecules / 16.5.1: |
Other tetragonal molecules / 16.5.2: |
M2X6 molecules / 16.5.3: |
Miscellaneous other PES results / 16.5.4: |
Vibrational Spectra / 16.6: |
M-M stretching vibrations / 16.6.1: |
M-L stretching vibrations / 16.6.2: |
Other types of Spectra / 16.7: |
Electron Paramagnetic Resonance / 16.7.1: |
X-Ray spectra, EXAFS, and XPS / 16.7.2: |
Abbreviations |
Index |