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1 Bulletin of the Polish Academy of Sciences. Chemistry

1 1998

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

Abdel-Mawgoud A. M., El-Sagher H. M.

Bulletin of the Polish Academy of Sciences. Chemistry

1998

Vol. 46, No. 2

167-177

A new series of Co(II) complexes of salicylideneamino acids with imidazole or substituted imidazole has been synthesized and characterized by elemental analysis, conductance measurements, electronic and IR spectra. The complexes are six coordinate with the general formula [Co(sal:aa)(B)(H(2)0)(2)]. The 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 voltammetric studies of the subject complexes were performed in 0.1 mol dm3 KCl. The data indicate that the reduction proceeds via an Erev Erev Cirr mechanism giving rise to a single diffusion-controlled irreversible two-electron cyclic voltammetric wave.