SYNTHESIS OF S,S'-BIS(2-BENZIMIDAZOLYLMETHYL)DITHIOGLYOXIME AND ITS COMPLEXES WITH NICKEL(II), PALLADIUM(II), COBALT(II), AND COBALT(III)


GOK Y., YILDIZ S.

SYNTHESIS AND REACTIVITY IN INORGANIC AND METAL-ORGANIC CHEMISTRY, vol.22, no.9, pp.1327-1341, 1992 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 9
  • Publication Date: 1992
  • Doi Number: 10.1080/15533179208017845
  • Title of Journal : SYNTHESIS AND REACTIVITY IN INORGANIC AND METAL-ORGANIC CHEMISTRY
  • Page Numbers: pp.1327-1341

Abstract

A new vicinal dioxime ligand with two 2-benzimidazolylmethyl groups, namely S,S'-bis(2-benzimidazolylmethyl)dithioglyoxime (H2L), has been prepared from cyanogen-di-N-oxide and 2-mercaptomethylbenzimidazole in dichloromethane at -10-degrees-C. Nickel(II), palladium(II), cobalt(II) and cobalt(III) complexes of H2L have a metal : ligand ratio of 1 : 2 and the ligand coordinates through the two N atoms, as most of the vicinal dioximes. [Co(HL)2(L')Cl] has been prepared with L'= pyridine, 2,6-dimethylpyridine, 2-mercaptopyridine, 2-carboxypyridine, pyridine-2-carboxyaldehyde, triphenylphosphine, triphenylarsine, together with a chloride ion as axial ligands. All these complexes are slightly soluble in common organic solvents. Structures are proposed according to elemental analyses, H-1, C-13-NMR, IR, and UV-Visible spectral data.