Synthesis and characterization of new complexes of Co+2, Ni+2 and with schiff base ligand

Abstract EN

New α-(2-pyridyl)benzylidine (5nitropyrid-2-yl)amine (L) ligand has been synthesized by condensation of 2-benzoyl pyridine and 2-amino-5-nitro pyridine in 1 : 1 molar ratio in ethanol.

Further the Co+2, Ni+2 and Cu+2 complexes were synthesized by reacting above ligand with metal chloride in (1 : 1) (1 : 2) or (2 : 2) (Ligand : metal) molar ratio in ethanolic medium.

The ligand and their complexes were characterized by electronic and IR spectra, magnetic susceptibility measurements, molar conductance and metal content analysis.

The complexes (1-3) and (7-9) are found to be non ionic in nature while the complexes (4-6) are found to be (1 : 2) electrolyte.

The magnetic moment and electronic spectral studies show a tetrahedral geometries for the complexes (1-6) and octahedral geometries for the rest of the complexes.