Synthesis and complexation of a novel soluble vic-dioxime with hydroxyethyl pendant arms


Gursoy S., Kocak M. , CIHAN A., GUL A., BEKAROGLU O.

TRANSITION METAL CHEMISTRY, vol.25, no.4, pp.474-477, 2000 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 4
  • Publication Date: 2000
  • Doi Number: 10.1023/a:1007028905198
  • Title of Journal : TRANSITION METAL CHEMISTRY
  • Page Numbers: pp.474-477

Abstract

A new soluble vic-dioxime ligand namely 1,4-bis(2'-hydroxyethyl)-2,3-bis(hydroxyimino)-5,6-diphenylpiperazine, (LH2) containing optically active centers has been prepared as a mixture of isomers from (CNO)(2) and N,N-bis(2-hydroxyethyl)stilbendiamine (1) which has been made by the reduction of the condensation of the product of benzaldehyde and 2-aminoethanol in the presence of aluminum amalgam. N,N-coordinated planar metal complexes of this ligand have been synthesized with Ni-II, Cu-II, Co-II, Pd-II and (UO2)-O-VI. Oxidation of (LH)(2)Co in the presence of a base, such as pyridine, leads to an octahedral complex (LH)(2)CopyCl containing pyridine and chloride as axial ligands in addition to vic-dioxime ligands. The structures of the ligand and its complexes are proposed on the basis of elemental analysis, H-1-n.m.r., mass, i.r. and u.v.-vis. spectral data.