SYNTHESIS AND CHARACTERIZATION OF SOME TRANSITION-METAL COMPLEXES OF N-(2-HYDROXY-1-NAPHTHYLIDENE) AMINO-ACIDS

A new series of Co(II), Ni(II), Cu(II) and Zn(II) complexes with Schif f bases derived from the condensation of 2-hydroxy-1-naphthaldehyde wi th glycine, L-valine and L-phenylalanine has been synthesized. The com plexes were characterized on the basis of elemental analyses, H-1 NMR, IR, conductivity, magnetic susceptibility measurements and electronic spectral data. The metal complexes were synthesized with in situ prep ared N-(2-hydroxy-1-naphthalidene)amino acids. Spectral data indicate that the ligands function as dibasic terdentate ligands with O, N and O donor atoms.