Synthesis and characterization of Ni(II) and Co(II) complexes of Schiff bases derived from 3,4-dimethyl-Delta(3)-tetrahydrobenzaldehyde and 4,6-dimethyl-Delta(3)-tetrahydrobenzaldehyde and glycene

The Schiff bases derived from 3,4-dimethyl-Delta(3)-tetrahydrobenzaldehyde or 4,6-dimethyl-Delta(3)-tetrahydrobenzaidehyde and glycine and their complexes with nickel(II) and copper(II) were synthesized and investigated. All compounds were characterized by elemental analyses, conductivity measurements, and FT-IR spectroscopy. The Schiff base ligands and their complexes were further characterized by H-1 NMR. The results suggest that the Schiff base acts as a bidentate ligand, which bonds to the metal ions through the imino nitrogen and carboxylate oxygen. The potassium salts of the Schiff bases are 1 : 1 electrolytes but all the complexes are nonelectrolytes.