Polymetallic Complexes. Part-XXXI. Cornplexes of Cobalt-, Nickel-, Copper-, Zinc-, Cadmium- and Mercury(II) with Chelating Azo Dye Ligands 1-(2'-Hydroxynaphthyl-1')-azo-2-hydroxybenzene, 1-(Acetylacetonyl-3')-azo-2-hydroxybenzene, 3-(3'-Acetoacetanilido)azo-1-hydroxybenzene and 3-(8'-Hydroxyquinonyl-5')- azo-1-hydroxybenzene

Post·Graduate Department of Chemistry, G. M'. College, Sambalpur-768 004 Manuscript received 24 September 1990, revised 23 May 1991, accepted 3 September 1991 Bis-bidentate title ligands having ONNO. ONOO and ONON potential donor atoms form polymeric complexes with divalent metal ions. As Inferred from analysis. conductance, magnetic. ir. electronic and esr spectral data, the ColI, Nill and Cull complexes are six-coordinated with an octahedral or distorted-octahedral configuration and the Znll, Cdll and Hgll complexes are four-coordinated with a tetrahedral geometry around the metal ions