Cluster oxalate complexes

Molybdenum-based high-temperature syntheses from the starting elements, with high yields, resulted [81] in chemically inert coordination polymers in which the desired cluster units are connected by bridging ligands into 1-D, 2-D, and 3-D frameworks. Sokolov and coworkers introduced an alternative method of cluster excision from the solids based on the mechanochemical reaction of cluster coordination polymers with an appropriate ligand. TG helped the characterization of these cluster oxalate complexes. 

Other metal complexes such as 2,2 -bipyridine complexes of Rh and Ir are efficient electrocatalysts for the reduction of C02 in acetonitrile.134 In the production of formate the current efficiency is up to 80%. Electrochemical reduction catalyzed by mono- and dinuclear Rh complexes affords formic acid in aqueous acetonitrile, or oxalate in the absence of water.135 The latter reaction, that is, the reduction of C02 directed toward C-C bond formation, has attracted great interest.131 An exceptional example136 is the use of metal-sulfide clusters of Ir and Co to catalyze selectively the electrochemical reduction of C02 to oxalate without the accompanying disproportionation to CO and CO2-. 

C-C bonds, 205-207 Carbon clusters/complexes anions, 1136-1140 cations, 1099-1135 neutrals, 1087-1097 Carboxylic acids RC(0)OH C-Br bonds, 242 C-C bonds aliphatic, 187 amino acids, 187, 189, 190 aromatic, 188 OH-containing, 189 oxalic acids, 189 prolines, 190 sarcosines, 189 unsaturated, 187 C-Cl bonds, 229-230 C-H bonds... 

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