Synthesis and characterization of metal complexes of Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Ru(III), Rh(III) and Pd(II) with derivatives of 1,3,4-thiadiazole-2,5-dithiol as new ligands

The synthesis of some new transition metal complexes with 1,3,4-thiadiazole-2,5-dithiol derivatives (L₁ and L₂) as new ligands is reported. Each complex was prepared by the reaction of the ligands with the appropriate metal salts (CrCl₃, MnCl₂·4H₂O, FeCl₃, CoCl₂·6H₂O, NiCl₂·6H₂O, CuCl₂·2H₂O, RuCl₃, RhCl₃ and PdCl₂). Elemental micro analysis (C.H.N.), UV–Visible spectroscopy, ¹H NMR, infrared (IR) spectroscopy, atomic absorption, magnetic susceptibility, continuous variation method and molar conductance techniques were used to characterize the structural formulae of these chelate complexes.