Redox-induced transformations of bi-(Cp(CO) 2 RePd(μ-C=CHPh)(PPh 3) 2 (2), Cp(CO) 2 RePd(μ-C=CHPh)(P-P) [P-P = 2-Ph 2 P(CH 2) 2 PPh 2 (dppe) (3), 2-Ph 2 P(CH 2) 3 PPh 2 (dppp) (4)], Cp(CO) 2 ReFe(μ-C=CHPh)(CO) 4 (5) and trinuclear (Cp(CO) 2 ReFe 2 (μ 3-C=CHPh)(CO) 6 (6), CpReFePd(µ 3-C=CHPh)(CO) 5 (P-P) [P-P = dppe (7), dppp (8)] heterometallic vinylidene complexes derived from Cp(CO) 2 Re=C=CHPh (1) were investigated by electrochemical methods. The oxidation processes of clusters 7 and 8 were studied by EPR spectroscopy. The electrochemical properties of clusters 7 and 8 were shown to depend on the nature of the chelate diphosphine ligand at the palladium center in contrast to complexes 3 and 4. The oxidation of complexes 2-4 was found to result in the Re-Pd, Pd-С 1 bond cleavage and formation of rhenium complex 1 and Pd-containing fragments. The oxidation of 7 and 8 resulted in the formation of the radical cations 7 +• and 8 +• , which gradually transformed into a number of intermediate products: Cp(CO) 2 RePd(μ-C=CHPh)(P-P), [Fe(CO) 3 ] +• , [CpReFe 2 (µ 3-C=CHPh)(CO) 6 ] +• and others. The final products of their oxidation in both cases were triangular clusters (CO) 8 Fe 2 Pd(P-P) [P-P = dppe (9), dppp (10)] and rhenium complex 1. The molecular structure of cluster 7 was established by X-ray diffraction analysis.