The direct electrochemical synthesis of metal–diphenylphosphido complexes, and the crystal structure of Cu4(µ-PPh2)4(Ph2PCH2PPh2)2
Abstract
The electrochemical oxidation of metal anodes in an acetonitrile solution of Ph2PH yields M(PPh2)(M = Cu, Ag, Au) or M(PPh2)2(M = Co, Zn, Cd); with a solution of Ph2PH and bis(diphenylphosphino)methane (dppm), this method gives Cu4(PPh2)4(dppm)2 whose structure is found to be very similar to that of Cu4(SC5H11)4(dppm)2.