New metal chelate complexes of azoligand derived from 4,5-diphenylimidazole

Abstract

Coupling reaction of (3,5-Dichlorophenyldiazonium chloride) with 4,5-dipheny-limidazole in alkaline alcoholic medium yielded a new azoligand 2-[(3,5-Dichloro phenyl)azo]- 4,5-diphenylimidazole (dcpai). The structure and nature of this organic ligand and its metal complexes with Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) were established on the basis of available technique such as elemental analysis, molar conductance measurements, magnetic susceptibility, IR and electronic spectral data. The spectral and analytical data revealed that this ligand coordinated through the nitrogen atom of azomethine group of heterocyclic imidazole ring and the other nitrogen atom of azo group which is the farthest of imidazole molecule. The geometry of the prepared metal complexes are discussed based on analytical and spectral data.