Mixed chloro-, NN-dialkyldithiocarbamato-, and S-alkyl NN-dialkyldithiocarbamate complexes of platinum(II). Crystal structure of [PtCl(S2CNEt2)(MeS2CNEt)]

Abstract

The platinum(II) complexes [PtCl(S₂CNMe₂)(EtS₂CNEt₂)](1), [PtCl(S₂CNEt₂)(MeS₂CNMe₂)](2) and [PtCl(S₂CNEt₂)(MeS₂CNEt₂)](3) have been prepared and characterized by i.r. and ¹H n.m.r. spectroscopy. The crystal and molecular structure of compound (3) has been solved by X-ray diffraction methods and refined by least squares to a final R value of 0.037. The platinum atom is bonded, in the usual square-planar arrangement, to the sulphur atoms of the bidentate ^–S₂CNEt₂ group, to the thiocarbonyl sulphur of the dithioester molecule, and to the chlorine atom. In solution the complexes release the weakly bonded dithioester molecule.