Polymetallic complexes .69. Preparation and characterisation of Cobalt(II), nickel(II), copper(II), zinc(II), cadmium(II) and mercury(II) complexes with bis-didentate N boolean AND O-O boolean AND N donor azodye ligands

Bis-3,3'-(p-tolylazo)-2,2'-dihydroxydinaphathalene and his 3, 3'-(p-anisylazo)-2,2'-dihydroxydinaphthalene act as a bis-bidentate NO-ON 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.