Chemistry of vinylidene complexes. XXIV. A new μ-vinylidene complex containing RePt core, and platinum-bound carbonyl ligand. Spectroscopic, structural and electrochemical study

Abstract The novel heterobinuclear μ-vinylidene complex [Cp(CO) 2 Re(μ-C=CHPh)Pt(PPh 3 )(CO)] ( 1 ) was isolated from the reaction mixture of [Cp(CO) 2 Re(μ-C=CHPh)Fe(CO) 4 ] and Pt(PPh 3 ) 4 for the first time. Alternative high-yield synthetic approaches to 1 were developed including the reactions of [Cp(CO) 2 Re(μ-C=CHPh)Pt(PPh 3 ) 2 ] ( 2 ) with Co 2 (CO) 8 and Rh(acac)(CO) 2 . The complex was characterized by IR and 1 H, 13 C and 31 P NMR spectroscopy, a molecular structure of 1 was determined by X-ray diffraction analysis. The electrochemical behavior of the new complex was studied by cyclic voltammetry at platinum or glassed carbon electrodes and by dc polarography at a dropping mercury electrode.