SYNTHESIS AND CHARACTERIZATION OF SOME MIXED-LIGAND COMPLEXES OF COPPER(II) AND COBALT(II) WITH SCHIFF-BASES AND HETEROCYCLIC ORGANIC-COMPOUNDS

Novel hexa-coordinated mixed-ligand complexes of copper(II) and cobalt (II) of the general formula [M(SB)(L-L)(H2O)], where L=L = 2'- PYBZ, H OEPS or 2'-APBX and SB = hbzaa2- for M = Cu(II), L-L = ECAP, CHPHM, 2' -PYBZ or HOEPS and SB = hbzaa2- for M = Co(II), and L-L = CHPHM or 2'- PYBZ and SB = hbzat2- for M = Co(II), have been synthesized by refluxi ng the respective metal salt/schiff base/heterocyclic organic donor in ethanol. The resulting complexes have been characterized on the basis of analytical data, conductance and magnetic measurements and infrare d spectral studies. Suitable octahedral structures have been proposed for these complexes.