Synthesis and infrared spectra of some dithiocacodylate complexes

Abstract

The synthesis of dithiocacodylate complexes of the metals chromium(111), indium(111), manganese(11), cobalt(11), nicke1(11),  zinc(11), and copper(1) is described. The compounds can be prepared either from sodium dithiocacodylate Na[S₂As(CH₃)₂] or by passing hydrogen sulphide through a methanolic solution of the metal cacodylate in the presence of hydrogen chloride. The infrared spectra in the region 4000-40 cm^-1 of the new compounds have been recorded and assigned by a comparison with the spectra of several compounds which are closely related. The arsenic-sulphur and metal-sulphur stretching frequencies occur in the region of 450 cm^-1 and 260-340 cm^-1, respectively.