SYNTHESIS AND CHARACTERIZATION OF COPPER(II), NICKEL(II) AND COBALT(II) COMPLEXES WITH A NEW SCHIFF-BASE DERIVATIVE OF ISONICOTINIC-ACID HYDRAZIDE

A series of binuclear complexes of the type [M(HDCTH)(H2O)(2)\(2)X(2) [where HDCTH =a schiff base derived from the condensation of isonicoti nic acid hydrazide (INH) and diacetylmonoxime (DM), [M=Co-II, Ni-II an d Cu-II, and X=Cl-, Br-, NO3-] have been prepared and characterised by elemental analyses, magnetic measurements, electronic and IR spectral analyses. Infra red spectra of the complexes indicate the participati on of azomethine nitrogen, oxime oxygen and carbonyl oxygen. The water molecules are coordinated as evidenced from the IR and thermal analys es. The magnetic and reflectance spectra suggest an approximately octa hedral symmetry around the metal ions.