Spectral and thermal characterization of divalent transition metal complexes with some triazolylthiourea derivatives

The complexes of Co(II), Ni(II), Cu(II) and Cd(II) with N-ethyl, N'-(3-triazolyl)thiourea (L1), N-phenyl, N'-(3-triazolyl)thiourea (L2), and N-benzoyl, N'-(3-triazolyl)thiourea (L3) have been prepared. The structure of the complexes has been determined on the basis of elemental and thermal analyses, electronic spectra, IR spectral data as well as molar conductance measurements. Thiourea derivatives used were found to act as neutral bidentate ligands in the case of L1 and L2, while L3 acts as a neutral tridentate ligand. The complexes were found to be in a distorted octahedral or tetrahedral configuration.