Synthesis and reactivity of the copper (II) complexes of N-α-acetophenyl-X-salicylaldimines (α = 4 or 3, X = H, 5-Br or 3-COOH ). Molecular structure of <i>bis-</i>(N-4-acetophenyl-salicylaldiminato) copper(II)

Abstract

The copper (II) complexes of the Schiff bases, N-α-acetophenyl-X-salicylaldimines (α = 4 or 3, X = H, 5-Br or 3-COOH) have been synthesised and characterised by UV-visible, IR, MS, ESR spectroscopy and magnetic susceptibility measurements. The solid state structure of Cu(SACPN_x)₂ (<b>I</b>) determined by single-crystal X-ray diffraction reveals a distorted square-planar metal coordination involving two imine N- and two deprotonated phenolate O atoms of two bidentate Schiff ligands in <i>trans- </i>arrangement. Both the Schiff bases and their copper (II) complexes undergo facile transamination reactions.