COMPLEXES OF NS AND NSO DONOR LIGANDS - NICKEL(II), COPPER(II) AND COBALT(II) COMPLEXES OF GLYOXAL BIS(MORPHOLINE N-THIO-HYDRAZONE) AND DIACETYL BIS(MORPHOLINE N-THIOHYDRAZONE)

Reactions of glyoxal bis(morpholine N-thiohydrazone), H2gbmth, with NiCl2. 6H2O, Ni(OAc)2. 4H2O, Ni(acac)2. H2O, CuCl2. 2H2O, Cu(OAc)2. H2O, Cu(acac)2, CoCl2. 6H2O, Co(OAc)2. 4H2O and Co(acac)2. 2H2O yield complexes of the type [M(gbmth)], [M = Ni(II), Cu(II) or Co(II)]. Diacetyl reacts with morpholine N-thiohydrazide in the presence of nickel salts to yield [Ni(II)(dbmth)], [Ni(II)(dmth)(OAc)]H2O and [Ni(II)(Hdmth)(NH3)Cl2] involving N2S2 and NSO donor ligands. Copper and cobalt complexes of N2S2 and NSO donor ligands with compositions [Cu(II)(dbmth)], [Co(II)(dbmth)]. 4H2O and [Co(II)(H2dbmth)]Cl2, have been isolated. The compounds have been characterised by elemental analyses, magnetic moments, molar conductance values and spectroscopic (electronic and infrared) data.