SYNTHESIS, SPECTROSCOPIC AND BIOLOGICAL CHARACTERIZATION MANGANESE (II), COBALT (II) AND NICKEL (II) COMPLEXES WITH AN ASYMMETRIC BIDENTATE THIAZOLIDINE DERIVATIVE

Mn(II), Co(II) and Ni(II) complexes with a bidendate ligand ethyl 2-(4-oxo-2-phenyl-1,3-thiazolidin-3-yl)-4,5,6,7-tetrahydro-1-benzothiophene-3carboxylate were synthesized and characterized on the basis of elemental analysis, molar conductance measurements, magnetic susceptibility values, UV-vis and IR spectral data. Spectral studies show that the ligand behaves as bidentate chelating agent and bonded to the metal ion through two oxygen atom. Electronic spectra and magnetic susceptibility measurement reveal octahedral geometry for Ni(II) and Co(II) complexes and tetrahedral configuration for Mn(II) complex. The complexes are found to be non-electrolytic in nature on the basis of low molar conductance. These metal complexes were also screened for its antibacterial activity against pathogenic strains causing urinary tract infections and were found to be effective.