Electrochemically Induced Phosphorus–Methyl Bond Formation Involving the Complex [Co(Ph2PCH2P(Ph)2PPPPP(Ph)2CH2PPh2)]BF4

The electrochemical properties of [Co(Ph 2 PCH 2 P(Ph) 2 PPPPP(Ph) 2 CH 2 PPh 2 )]BF 4 complex have been studied by the method of cyclic voltammetry. The electrochemical methylation of this complex have been cunducted in the presence of iodomethane which has led to the formation of phosphonium salt—methylene bis(methyldiphenylphosphonium) diiodide as final product. It was found, that this reaction proceeds with the breakage of the P–P bonds in polyphosphorus ligand and with the formation of new P–C bonds.