The redox properties of new binuclear μ-vinylidene complexes Cp(CO)

The redox transformations of trinuclear phenylvinylidene CpReFePt(µ 3-C=CHPh)(CO) 5 (P-P) [Cp-cyclopentadienyl; P-P-1,2-bis(diphenylphosphino)ethane, 1,3-bis(diphenylphosphino) propane] clusters were studied by electrochemical methods at platinum, glassed carbon, and dropping mercury electrodes in acetonitrile solutions. It was established that one-electron oxidation of the clusters results in formation of the binuclear Cp(CO) 2 RePt(μ-C=CHPh)(P-P) [P-P = dppe, dppp] complexes and Fe-containing fragments.

Two different synthetic methods were applied to obtain heteronuclear phenylvinylidene clusters CpReFePt(μ 3 -C=CHPh)(CO) 5 (P-P) (P-P -bis(diphenylphosphino)ethane (1), bis(diphenylphosphino)propane (2)). The compounds were studied by IR and NMR spectroscopy. Their molecular structures were proposed based on IR, NMR spectroscopic data.