COBALT(II), NICKEL(II) AND COPPER(II) COMPLEXES OF SCHIFF-BASES WITH N OR S DONOR SITES

Condensation of 2-aminothiazole and its derivatives with vic-hydroxyal dehydes gives Schiff bases which form complexes of the type ML(2) with bivalent transition metals. The ligand molecule contains both N and S donor sites and coordination through any one atom is possible. The el emental analysis suggests 1 : 2 stoichiometry, magnetic susceptibility and electronic spectral data are in favour of octahedral structure fo r Co-II Ni-II and Cu-II complexes. Infrared spectral data indicate bon ding through oxygen atom of the hydroxyl group and a possibility of co ordination through nitrogen atom, each of the ligand molecule. Complex es are found to be of nonelectrolytic nature.