Spectral Characterization and Biological Studies on Mixed Ligand Complexes of Cr(III), Ni(II) and Cu(II) Derived from 3-Aminopyridine and Nitrite Ion

Abstract

Mixed ligand metal complexes of Cr(III), Ni(II) and Cu(II) complexes with 3-aminopyridine and nitrite ions have been synthesized by microwave irradiation technique. The metal complexes were characterized by elemental analyses, molar conductance, IR, Far-IR, electronic and EPR studies. The spectroscopic studies reveal the composition, different modes of bonding and electronic transition and probable geometry of the complexes. On the basis of characterization data, distorted octahedral geometry predicted for Cr(III) and Cu(II) complexes; distorted tetrahedral geometry predicted for Ni(II) complex. The organic ligand (3-aminopyridine) and the metal complexes were screened against pathogenic bacteria and fungi in vitro.