Synthesis, Spectral and Structural Studies of Neutral Co(II), Ni(II) and Cu(II) Macrocyclic Dithiocarbamate-Based Complexes Formed via one pot reaction

Abstract

Abstract The synthesis of dinuclear transition metal(II) macrocyclic dithiocarbamate complexes and there characterisation are reported. The dithiocarbamate complexes were prepared via a one pot reaction by mixing the secondary amine {N1,N4-dibenzhydrylbenzene-1,4-diamine}, CS2, KOH, and metal chloride. The modes of bonding and overall geometry of the compounds were determined through physicochemical and spectroscopic methods; elemental analysis, FTIR, UV-Vis, magnetic susceptibility, conductance, melting points, mass spectroscopy and 1H-, 13C-, DEPT, 1H- 1H COSY, 1H- 13C HQMC NMR spectroscopy. These studies revealed the formation of dimetal bisdithiocarbamate complexes of the general formula [M)L)]2 with tetrahedral geometry about Co(II) and Ni(II) atoms. However, square planar geometries have been suggested for Cu(II) complex in a solid state but its exhibited octahedral ina liquid states.