The use of conductivity measurements in organic solvents for the characterisation of coordination compounds

1. Advantages of Chemical Redox Agents 878 2. Disadvantages of Chemical Redox Agents 879 C. Potentials in Nonaqueous Solvents 879 D. Reversible vs Irreversible ET Reagents 879 E. Categorization of Reagent Strength 881 II. Oxidants 881 A. Inorganic 881 1. Metal and Metal Complex Oxidants 881 2. Main Group Oxidants 887 B. Organic 891 1. Radical Cations 891 2. Carbocations 893 3. Cyanocarbons and Related Electron-Rich Compounds 894

/pdf/chemical-redox-agents-for-organometallic-chemistry-4fs84ntwp8.pdf

Chemical Redox Agents for Organometallic Chemistry

The direct functionalization of C-H bonds in organic compounds has recently emerged as a powerful and ideal method for the formation of carbon-carbon and carbon-heteroatom bonds. This Review provides an overview of C-H bond functionalization strategies for the rapid synthesis of biologically active compounds such as natural products and pharmaceutical targets.

C-H bond functionalization: emerging synthetic tools for natural products and pharmaceuticals

Simple construction of an infrared optically transparent thin-layer electrochemical cell: Applications to the redox reactions of ferrocene, Mn2(CO)10 and Mn(CO)3(3,5-di-t-butyl-catecholate)−

2.2. BETS Salts with Halometalate Anions 5424 3. Magnetic Metals and Semiconductors 5426 3.1. Mononuclear Metal Complexes 5427 3.1.1. Tetrahalometalates 5427 3.1.2. Hexahalo Anions 5431 3.1.3. Pseudohalide-Containing Anions 5431 3.2. Polynuclear Metal Complexes 5433 3.2.1. Dimeric Anions 5433 3.2.2. Polyoxometalate Clusters 5434 3.3. Chain Anions: Maleonitriledithiolates 5439 4. Ferromagnetic Conductors 5441 5. Ferrimagnetic Insulators 5443 6. Conclusions 5445 7. Acknowledgment 5446 8. References 5446

Magnetic Molecular Conductors

Introduction and Survey.- Complexes of the Group 5 Elements.- Chromium Compounds.- Molybdenum Compounds.- Tungsten Compounds.- X3M=MX3 Compounds of Molybdenum and Tungsten.- Technetium Compounds.- Rhenium Compounds.- Ruthenium Compounds.- Osmium Compounds.- Iron, Cobalt and Iridium Compounds.- Rhodium Compounds.- Chiral Dirhodium (II) Catalysts and Their Applications.- Nickel, Palladium and Platinum Compounds.- Extended Metal Atom Chains.- Physical, Spectroscopic and Theoretical Results.

Multiple bonds between metal atoms

Cyclizations of ω-formylalkyl radicals can provide an efficient route to the corresponding cycloalkanols. However, if an ω-vinyl group is present an alternative mode of cyclization exists, and there is competition between cycloalkanol and methyl cycloalkane formation (i.e. (C=O) n versus (C=C) m ). Cyclohexanol formation, (C=O) 6 , usually overwhelms any alternative process, but cyclopentanol and methylcyclopentane processes ((C=O) 5 and (C=C) 5 ) can be competitive. The latter process involves the well-studied 5-hexenyl radical ring closure, and hence by choice of a suitable substrate, where both modes of cyclization are optimal, we have obtained rate data for cyclopentanol (C=O) 5 formation in a direct-competition experiment. The value k c=O ≥9.6×10 5 s −1 is consistent with that obtained by Beckwith and Hay. The study has also helped to define some of the requirements for optimizing the formation of cycloalkanols

Studies on the intramolecular competitive addition of carbon radicals to aldehydo and alkenyl groups

Preparation, proprietes et structure des complexes Re 2 (O 2 CCH) 3 Cl 4 (dppm) 2 • 2(CH 3 ) 2 CO, cis-Re 2 (O 2 CCH) 3 Cl 2 (dppm) 2 et trans-[Re 2 (O 2 CCH 3 ) 2 Cl 2 (dppm) 2 ]PF 6 • CH 2 Cl 2

Isomerization in metal-metal bonded M2L10 systems involving cis and trans sets of bis(diphenylphosphino)methane ligands

X-Ray Photoelectron Spectra of Inorganic Molecules. 18. Observations on Sulfur 2p Binding Energies in Transition Metal Complexes of Sulfur-Containing Ligands

Preparations et etudes par voltammetrie cyclique des reactions d'oxydation et de reduction de Re 2 (μ−H) 4 (PR 3 ) 4 , (PR 3 =PPh 3 , PEtPh 2 et PEt 2 Ph) et de Re 2 (μ−H) 4 ×H 4 (AsPh 3 ) 4 . Donnees, aussi, sur les reactions de (Re 2 (μ−H) 4 H 4 (PPh 3 ) 4 ]PF 6 et de [Re 2 (μ−H) 4 H 3 (PPh 3 ) 4 (NCMe)]PF 6 , ou de [Re 2 (μ−H) 4 H 3 (PPh 3 ) 4 (CN−t−Bu)](PF 6 ) 2 et de [Re 2 (μ−H) 3 H 2 (PPh 3 ) 4 (CN−T−Bu) 2 ](PF 6 ) 2 avec du tert-butylisocyanure

Dinuclear polyhydrides of rhenium: isolation and characterization of diamagnetic and paramagnetic complexes containing the octahydrodirhenium(n+) ([Re2H8]n+), heptahydrodirhenium((n + 1)+) ([Re2H7](n+1)+), and pentahydrodirhenium((n + 1)+) ([Re2H5](n+1)+) cores (n = 0 or 1) stabilized by phosphine, nitrile, and isocyanide ligands

Richard A. Walton

Papers

Multiple bonds between metal atoms

Studies on the intramolecular competitive addition of carbon radicals to aldehydo and alkenyl groups

Isomerization in metal-metal bonded M2L10 systems involving cis and trans sets of bis(diphenylphosphino)methane ligands

X-Ray Photoelectron Spectra of Inorganic Molecules. 18. Observations on Sulfur 2p Binding Energies in Transition Metal Complexes of Sulfur-Containing Ligands