Synthesis, Characterization and Biological Studies Of metal Complexes of m - Amino Benzoic Acid.

Abstract

Reaction of bidentate m-amino benzoic acid (mABAH) with metal salts of (Cu(II), Pb(II), Zn(II), Mn(II), Co(II), Cd(II), Ni(II)) yields the new complexes of type [M(mABA)2] (where M = Cu(II), Pb(II) or Zn(II), Mn(II), Cd(II)), and [Hg(mABA)(H2O)Cl] and [M(mABA)2(H2O)2] (where M = Co(II), Ni(II)). The metal complexes were characterized by elemental analysis, molar conductance and IR spectra confirm coordination through nitrogen atom of amine group and the oxygen atom of the carboxylic anion group to the central metal ion. The magnetic moment data suggested for all complexes to have a tetrahedral and octahedral geometry around the central metal ion. The electronic spectral data also agree with their proposed structures. Biological activity of the ligands (mABAH) and their metal complexes were tested against gram positive bacteria (Staphylococcus arreus) and gram negative bacteria (Escherichia coli. and Pseudomonas aeruginosa).