Synthesis and Characterization of Model Compounds — III Complexes of Iron(II), Iron(III), Cobalt(III), Nickel(II) and Copper(II) with Syn-Phenyl-α-Pyridyl Ketoxime

Abstract

Complexes of iron(II), iron(III), cobalt(III), nickel (II) and copper(II) with Syn-phenyl-α-pyridyl ketoxime (PPK) have been isolated and their structural properties investigated. The magnetic and electronic spectral data show that iron(II), and cobalt(III) complexes have pseudo octahedral and octahedral geometry respectively. Nickel(II) forms complex confirming the square-planar geometry. The binuclear nature and square-pyramidal geometry of copper complex are revealed from its magnetic and electronic spectral studies. The infrared spectral data indicate that PPK acts as uni-negative bidentate ligand by coordinating with azomethine nitrogen atom and heterocyclic ring nitrogen. The molar conductance data indicate ionic nature of iron, cobalt and nickel complexes.