Synthesis, characterization and thermal studies of 2,2′-bipyridine adduct of bis-(N-alkyl-N-phenyl dithiocarbamato-S,S′)cadmium(II)

Three 2,2′-bipyridine adducts of alkyl-phenyl dithiocarbamate cadmium(II) formulated as [Cd(mpdtc)2bpy] (1), [Cd(epdtc)2bpy] (2), [Cd(bpdtc)2bpy] (3) have been synthesized and characterized by elemental analysis, FTIR, 1H and 13C NMR spectroscopy. Two of the compounds were further characterized by single crystal X-ray diffraction analysis. The two compounds belong to the monoclinic space group P21/c. Single crystal X-ray analysis reveals octahedral coordination around the Cd(II) ions involving two molecules of dithiocarbamate acting as bidentate chelating ligands through the S-atom and one bidentate bipyridine through the N-atoms. Each of the compounds crystallizes with a molecule of chloroform. The thermal decomposition profiles of the compounds and EDX analysis of the residues showed that the compounds decomposed to their respective metal sulphides. They might thus serve as single molecule precursors for metal sulphides thin films or nanoparticles.

► Bipyridine adducts of Cd(II) complexes of dithiocarbamates were synthesized and characterized.
► Single crystals X-ray structures of two compounds are reported.
► The compounds exist as distorted octahedral geometries in the CdS4N2 form.
► The thermal properties of the compounds were studied.