Stability of the metal–carbon–halogen system. Part I. The preparation and properties of some platinum(II)- and palladium(II)-vinyl complexes

Abstract

A number of chlorovinyl complexes of palladium and platinum have been prepared from the reaction of the zerovalent palladium or platinum complexes [(Ph₃P)₄M] with chlorinated olefins such as tetrachloroethylene, trichloroethylene, and dichloroethylene. ¹H N.m.r. spectroscopic studies of the complexes containing PPh₂Me have allowed the stereochemistry of the new compounds to be established. Oxidation of the Pt^II complexes with chlorine yields six-co-ordinate vinyl complexes of Pt^IV.