Copper(ii), Cobalt(iii), Nickel(ii), Palladium(ii), and Zinc(ii) Complexes of the Schiff Base Ligands Derived From 2,6-Diacetylpyridine and Phthaldialdehyde

Two new ligands, N,N′-bis[2-hydroxy-3-methoxy-N-(pyridyl) benzylamine]-2,6-di acetylidenepyridine (H2L′) and N, N′-bis [2-hydroxy-3-methoxy-N-(pyridyl)benzylamine]-1,2-phthaldialdimine (H2L″) and their Cu(II), Co(III), Ni(II), Pd(II) and Zn(II) complexes have been prepared and characterized by elemental analyses, IR, electronic spectra, magnetic moments, 1H and 13C NMR spectra, mass spectral and molar conductance data. The mononuclear Co(III) complexes of these ligands have been isolated with two molecules of DMF. While the Co(III) complex of H2L′ is a 1:1 electrolyte, the other complexes and ligands are non-electrolytes. The ligands H2L′ and H2L″ and some of their complexes show antimicrobial activity against bacteria and yeast.