SYNTHESIS AND CHARACTERIZATION OF NICKEL(II), CHROMIUM(III), COBALT(II), COPPER(II), ZINC(II) AND CADMIUM(II) COMPLEXES WITH ISATIN-ISONICOTINOYLHYDRAZONE

A few metal complexes of isatin-isonicotinoylhydrazone with Ni(II), Cr (III), Co(II), Cu(II), Zn(II) and Cd(II) have been prepared and charac terized on the basis of elemental analyses, infrared and electronic sp ectra as well as H-1 NMR spectra, conductivity and magnetic. measureme nts. In view of the results obtained, it has been found that two molec ules of isatin-isonicotinoylhydrazone are chelated to the central meta l ion as bis-uninegative ONO tridentate ligand forming non-electrolyti c octahedral metal complexes.