BINUCLEAR METAL-COMPLEXES .4. COPPER(II), COBALT(II) AND NICKEL(II) COMPLEXES WITH 1-HYDROXY-2,3-DIMETHYL-6-AMINO-6-MERCAPTO-1,4,5-TRIAZA-1,3-HEXADIENE (HDAMTH)

A few homo-binuclear metal complexes of the type [(HDAMTH) M (H2 O)2]2 X2; where HDAMTH = a Schiffs base obtained by the condensation of thiosemicarbazide and diacetylmonoxime, M = copper(II), nickel(II) and cobalt(II) and X = Cl-, Br-, Ac-, No3-, Clo4-, so4-- etc. have been isolated. Infrared spectra of the complexes suggest that the ligand coordinates to the metal ion through its azomethine nitrogen, oxime oxygen and thionyl sulphur. The water molecules seem to be coordinated as evidenced from IR and thermal analyses of the complexes. The complexes have high molar conductance values. Reflectance spectra of the complexes indicate octahedral geometry around the metal ions. Different crystal field parameters such as B, beta, etc. for the cobalt(II) and nickel(II) complexes have also been calculated.