Polymetallic Complexes Part-LXIX: Preparation and Characterisation of Cobalt (II), Nickel(II) Copper(II), Zinc (II), Cadmium(II) and Mercury(II) Complexes with Bis-Bidentate Donor Azodye Ligands

Abstract

Bis-3,3'-(p-tolylazo)-2,2'-dihydroxydinaphathalene and bis 3, 3'-(p-anisylazo)-2,2'-dihydroxydinaphthalene act as a bis-bidentate  donor chelating ligands co-ordinating to the metal atoms through azo nitrogen and phenolic oxygen atoms. The complexes formed by Co(II) ions are octahedral, Cu(II) distorted-octahedral, Ni(II) square-planar and tetrahedral stereochemistry has
been suggested for the rest Zn(II), Cd(II) and Hg(II) complexes
basing upon elemental analysis, magnetic moment, conductivity
measurement, IR, electronic spectra, NMR and ESR spectral data.
All the twelve complexes are dimeric in nature.