Ruthenium carbonyl clusters substitution

Oro and co-workers have shown that the one-pot reductive carbonylation of RuCls n-HjO with zinc, in the presence of a pyrazole derivative, yields dinuclear, pyrazolato-bridged, carbonyl complexes. To our knowledge, this was the first report on a facile, one-step synthesis of substituted carbonyl clusters, starting from ruthenium chloride. The one-pot synthetic route described here gives [PPN][HRu3(CO)n] in a yield of 83%, with respect to RUCI3 n-H20 as the starting material. 

Ruthenium and Osmium. The general methods by which osmium carbonyl clusters may be activated have been outlined. Routes to reactive substitution products of... 

Polynuclear Carbonyl Derivatives.-Variable temperature MAS n.m.r. methods have been used to probe the exchange processes occurring in solid homonuclear carbonyls containing 3 and 4 metal atoms.A quantitative investigation of the chemistry resulting from both continuous- and flash-photolysis of Ru3(C0)i2 has been carried out, and a new polymeric ruthenium carbonyl, Ru(C0)it n prepared from this precursor. The steric and electronic effects in associative substitution reactions of Iri (C0)i2 have also been examined. The combination of two OS3 units to yield an improved route to Ose raft-like clusters has been achieved, and a comprehensive analysis published on the different Mg cores of stacked Mg triangles in the [Mg C0)i8] "... 

TRI- AND TETRANUCLEAR CARBONYL-RUTHENIUM CLUSTER COMPLEXES CONTAINING ISOCYANIDE, TERTIARY PHOSPHINE, AND PHOSPHITE LIGANDS. RADICAL ION-INITIATED SUBSTITUTION OF METAL CLUSTER CARBONYL COMPLEXES UNDER MILD CONDITIONS... 

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