Complex compounds of 1,5-disubstituted 2,4-dithiobiurets with copper(II) chloride

1,5-diphenyl, 1,5-di-p-tolyl, 1-phenyl 5-0-tolyl, 1-phenyl 5-p-tolyl and 1-methyl 5-p-tolyl 2,4-dithiobiurets react with anhydrous copper(II) chloride in alcohol to form golden yellow complexes of general formula [CuL₂]· Cl₂, where L is a molecule of the ligand. The structures of these complexes have been studied by infrared spectroscopy, conductance and magnetic susceptibility measurements. The unusual magnetic moment (1.11–1.34 B.M.) values of these complexes are indicative of the metal–metal bonding. The structure of these complexes are proposed to have square planer configurations.