Abstract:
2-Cyanoethyldiphenylphosphine (L) was synthesized from diphenylphosphine and acrylonitrile using an aqueous base as a catalyst. This ligand reacted with Pt(II) and Pd(II) salts to yield complexes of the stoichioretry MX2L2 (X = Cl, Br, NCS). In these complexes the ligand was found to function as a monodentate phosphine. infrared spectroscopic evidence suggested that the platinum complexes are of cis and the palladium complexes of trans geometries.A complex of the stoichiometry Pd2Cl4L2 was isolated from a 1:1. mole ratio of PdCl2 to L. Spectroscopic evidence suggested that the complex is a ligand bridged dieter which utilizes the phosphorus and nitrogen lone pairs of L. The nitrile groups in this complex reacted rapidly with alcohols to yield coordinated imino-ether groups.