Synthesis & characterization and electrochemical investigation of Co(II) salicylideneamino acid imidazole ternary complexes

A new series of Co(II) complexes of salicylideneamino acids with imidazole or substituted imidazole has been synthesized and characterized by elementa l analysis, conductance measurements, electronic and IR spectra. The comple xes are six coordinate with the general formula [Co(sal:aa)(B)(H2O)(2)]. Th e salicylidene-amino acid ligand acts as a divalent tridentate Schiff base, where the imidazole or substituted imidazole acts as a monodentate ligand. The structure of the complexes is suggested to be octahedral. The cyclic v oltammetric studies of the subject complexes were performed in 0.1 mol dm(- 3) KCl. The data indicate that the reduction proceeds via an E-rev E-rev C- irr mechanism giving rise to a single diffusion-controlled irreversible two -electron cyclic voltammetric wave.