STRUCTURAL STUDIES OF COPPER(II) COMPLEXES WITH TETRADENTATE SCHIFF BASE LIGAND

Maneesh Kumar Pandey, Manoj Kumar, Kamlesh Kumar Singh*

A noble series of Cu(II) complexes with tetradentate Schiff base ligand have been prepared from the condensation reaction of 2,6-diacetyl pyridine and α-amino acetohydroxamic acid in aqueous alcoholic medium at room temperature. The synthesized Schiff base and its copper complexes were characterized by using elemental analysis, molar conductivity measurements, magnetic moment measurements, IR and UV-Vis spectral data investigations. The all complexes of Cu(II) are stable in air and coloured.  The molar conductance value of synthesized copper(II) complexes in dimethyl formamide solution indicates they are non-electrolytic nature. The presence of unpaired electrons in the d-orbital makes all copper (II) complexes are paramagnetic in nature. The infrared spectral data of investigated Schiff base show that ligand acts as tetradentate and coordinate through two oxyimino nitrogen atoms and two azomethine nitrogen atoms to the metal ions. On the basis of elemental analysis, magnetic behavior and different spectral analysis distorted octahedral geometry for Cu (II) complexes were proposed.