μ-acetato / μ-aqua bridged binuclear vic-dioxime complexes thermal,magnetic and spectral studies

A new amino vic-dioxime ligand,n,n′-[3,3′-{ethane-1,2-di-yl-bis(oxy)bis(3,1-phenylene)}bis(n′-hydroxy-)2-(hydroxyimino)-acetimidamide] (lh4) was synthesized by reaction of 1,2-bis(m-aminophenoxy)ethane and anti-chloroglyoxime. then,its cu(ii),ni(ii),co(iii) and cd(ii) complexes were synthesized by the ligand and cu(aco)2.h2o,ni(aco)2.4h2o,co(aco)2.4h2o and cd(aco)2 metal salts,respectively. the ligand and its metal complexes were characterized by elemental analysis,ft-ir,1h-nmr,uv-vis spectra,magnetic measurements and thermal analysis (tga-dta) techniques. all complexes were diamagnetic and binuclear. the co(ii) complex was oxidized to co(iii). while suggested structures of cu(ii) and ni(ii) complexes were found as square-planar,co(iii) and cd(ii) complexes were found as octahedral geometries. © 2015,chemical society of pakistan. all rights reserved.