Abstract
The redox properties of new binuclear μ-vinylidene complexes Cp(CO)2RePt(μ-C = C2HPh)LL′ [L = СO, L′ = PPh3 (1); L = СO, L′ = P(OPr)3 (2); L = L′ = PPh3 (3); L = L′ = P(OPr)3 (4)] were studied by electrochemical methods at a platinum, a glassed carbon and a dropping mercury electrodes in acetonitrile solutions. It was established that one-electron oxidation of 3 and 4 results in a cleavage of the Re-Pt and Pt-C1 bonds affording vinylidene complex Cp(CO)2RePt = C = CHPh and [PtLL′] fragments. In contrast to complexes 3 and 4, one-electron oxidation of 1 and 2 is reversible, indicating the greater electrochemical stability of lasts relative to 3 and 4.
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