Synthesis and Characterization of Trinuclear Complexes and Adducts through Oxidative Addition Reaction of Thiuram Disulfide

Selenium metal react with (RNHC(S)S)2 when (R = Ph or o-EtPh) in refluxing toluene to give the compounds [Se{RNHC(S)S}4] in high yields. The new trinuclear complexes were prepared by the reaction of [Se{RNHC(S)S}4] with some transition metal chloride salts in (1:2) molar ratio giving complexes of the general formula [M2Se{RNHC(S)S}4Cl4] where M = Co(II) and Ni(II). Adducts of these complexes with triphenyl phosphine and 1,10-phenanthroline were also prepared.
The new complexes and adducts were characterized by atomic absorption, infrared, UV-visible spectroscopy, conductivity and magnetic measurements.