Chemistry of mercaptopyridines and related ligands: Part I-Synthesis & spectroscopic studies of complexes of copper(I) with 2(1H)-pyridinethione-S and tertiaryphosphines

Abstract

1225-1227Reaction of 2(1H)-pyridinethione-S(HpyS) with copper(II) chloride gives a copper(I); complex of stoichiometry, CuCl(HpyS) which on further reaction with triphenylphosphine (Ph3P ) and bis(diphenylphosphino) alkanes, Ph2P(CH2)nPPh2 (n = 1-4) gives mixed ligand complexes, CuCl(HpyS)Ln (n = 2 for Ph3P and 1 for other ligands). On the other hand, the reaction of copper(II) bromide with HpyS gives a copper(II) complex, CuBr2(HpyS)2 which on similar reactions with phosphine ligands gives the analogous copper(I) complexes, CuBr(HpyS)Ln. The X-ray crystal structure for CuCl(HpyS)(Ph3P)2 supports the formulated geometries for other complexes