Binuclear Metal Complexes of Cobalt (II) with the ligand 1,2,5,6-Tetraphenyl-3,4-Diaza-1,6-Dihydroxymino-2,4-Hexadiene

Abstract

Binuclear metal complexes of Co(II) with the ligand 1,2,5,6-
tetraphenyl-3,4-diaza-1,6-dihydroxyimino-2,4-hexadiene of the
type Co₂L₂X₄ (X = Cl^-, Br^-, I^- or NO₃^- have been prepared and
characterized on the basis of analytical, IR, electronic and magnetic
moment data. IR spectral data show coordination of the ligand with
the metal ions through the azine and oxime nitrogens in a bi-bidentate
manner. The complexes are suggested to possess a hydrogen
bonded binuclear structure on the basis of IR data. Magnetic values
and electronic spectra show a tetragonal crystal field around metal
ions.