Synthesis, Spectroscopic Characterization and Biological Activity of Schiff base Metal Complexes derived from 2-amino-5-iodo-benzoicacid hydrazide

ABOUT AUTHOR
A K. Siddappa*, Mallikarjun Kote
Department of Chemistry, Gulbarga University Gulbarga, Karnataka- India.
*E-mail: [email protected]

Abstract
The Cu(II), Co(II), Ni(II), Zn(II), Cd(II), Hg(II), Mn(II) and Fe(III) complexes of Schiff base (Z)-2-((2-hydroxyquinolin-3-yl) methyleneamino)-5-iodobenzoic acid has been synthesized and characterized by various spectral techniques. The complexes were prepared by reacting the ligand and metal chloride of Cu(II), Co(II), Ni(II), Zn(II), Cd(II), Hg(II), Mn(II)  and Fe(III) in ethanol to get a series of mononuclear complexes. The complexes were characterized by CHN analysis, conductivity measurements, magnetic susceptibility, IR, NMR, ESR, UV-Vis and X-ray powder diffraction studies. By these spectral studies it is found that Cu(II), Co(II), Ni(II), Mn(II)  and Fe(III) complexes have exhibited octahedral geometry and Zn(II), Cd(II),  Hg(II) complexes have exhibited tetrahedral geometry. The ligand and its metal complexes have been screened for their antimicrobial activities. The prepared ligand shows low activity and its metal complexes shows moderate to good activity.
Key words: Quinoline, Schiff base, spectral studies, metal complexes and antimicrobial activity