The direct electrochemical synthesis of dialkyldithiocarbamate and diethyldithiophosphate complexes of main group and transition metals

Abstract

Dialkyldithiocarbamate derivatives (R2NCS2)nM of a number of metals (M = Fe, Co, Ni, Cu, Ag, Zn, Cd, In, Tl) have been synthesised in good yield by electrochemical oxidation of appropriate sacrificial anodes in non-aqueous solutions of either the corresponding tetraalkylthiuram disulphide (R2NCS2)2 (R = Me, Et) or a mixture of carbon disulphide plus the secondary amine R2NH (R = Et, i-Pr; R2NH = piperidine). Similar experiments with solutions of (EtO)2P(S)SH (= HL) gave MLn•derivatives (M = Fe, Co, Ni, Cu, Ag, Au, Zn, Cd, Hg, Ga, In, Tl) while in the presence of HL + 1,10-phenanthroline, MLn•phen derivatives were obtained for M = V, Mn, Fe, Co, Zn, and Ga.