THE DIRECT ELECTROCHEMICAL SYNTHESIS OF TIN, COBALT, COPPER, ZINC, CADMIUM AND SILVER 7-FORMYL-8-HYDROXYQUINOLINE COMPLEXES

Main group and transition metal complexes of 7-formyl-8-hydroxyquinoli ne have been synthesized by an electrochemical technique using a sacri fical anode in a non-aqueous solution of the ligand, and characterized by elemental analyses and i.r. spectra. The ligand acts as a monobasi c tri-dentate chelating agent coordinating through C=N, C=O and OH gro ups by replacement of a proton from the latter group. The electrical c onductivities of the complexes were measured at different temperatures and annealing times. Their activation energies were calculated; the v alue obtained for the Zn-II complex lay in the range reported for semi conducting materials.