COORDINATION OF COPPER(II) AND NICKEL(II) IONS BY A NOVEL OPEN-CHAIN OXIME LIGAND

Potentiometric spectroscopic and X-ray studies of the open chain oxime ligand, '-bis(2-hydroxyimino-propionyl)propane-1,3-diamine and its co mplexes with Ni-II and Cu-II ions showed a very high efficacy of the l igand studied in the co-ordination of both Cu-II and Ni-II ions. The m etal complexes are very stable and square-planar with four nitrogens i nvolved in metal-ion binding. These complexes may be additionally stab ilised by hydrogen bonds between two oxime oxygen atoms.