New Complexes of Iron(III), Cobalt(II), Nickel(II) and Copper(II) with the Schiff Base Derived from Quinoxaline-2-carboxaldehvde and Glycine

New complexes of iron(III), cobalt(II), nickel(II) and copper(II) with the Schiff base derived from quino-xaline-2-carboxaldehyde and glycine have been synthesized and characterised using elemental analyses, solid state infrared and electronic spectra, magnetic measurements and TG studies. The complexes have the general formulae, [M2(QCG)C1(OH)2(H2o)4] for the Co(II), Ni(II), and Cu(II), and [Fe2(QCG)Cl(OH)4(H2O)2] for the Fe(III) complexes (where QCG = quinoxaline-2-carboxal-ideneglycine). A dimeric structure involving Cl and OH bridges has been proposed for these complexes.