Copper(II), nickel(II) and cobalt(II) complexes of oxaldihydrazide and succindihydrazide Schiff bases with salicylaldehyde ando-hydroxyacetophenone

Abstract

SummaryPolymeric copper(ll), nickel(ll) and cobalt(ll) complexes of the type M2L where M = Cu II, Ni II or Co 11 and H4L = disalicylaldimine oxamide (H4A), di(o-hydroxyacetophenoneimine)oxamide (H4B), disalicylaldimine succinamide (H4C) or di(o-hydroxyacetophenoneimine)succinamide (H4D), have been synthesized and characterized by analysis, i.r. and electronic spectra and magnetic moment data. Copper(ll) complexes and some of the nickel(ll) and cobalt(ll) complexes are planar while other nickel(ll) complexes are distorted octahedral and other cobalt(ll) complexes are square pyramidal. Anomalously low magnetic moments of some complexes have been related to M-M interactions v/a oxo-bridge structures.