891184-49-9Relevant academic research and scientific papers
Synthesis, characterization, and electrochemical studies of ternary complexes of lanthanum(III) and cerium(III) with some naphthylideneamino acids and imidazoles
Rabia, Mostafa K. M.,Aly, Gamila Y.,El-Dessouki, Mohamed M.,Al-Mohanna, Maha A. F.
, p. 801 - 809 (2005)
A new series of ternary lanthanium(III) and cerium(III) complexes containing Schiff bases derived from some amino acids, viz: glycine; alanine; phenylalanine; valine and leucine with 2-hydroxy-1-naphthaldehyde as primary ligands, and 1-methylimidazole & 1,2-dimethylimidazole as secondary ligands were synthesized. The complexes were characterized on the bases of microanalyses, electrical conductance, IR & 1H NMR spectra, thermal analysis and cyclic voltammetric data. All complexes were found to be non-electrolytes with the general formula of [ML(NO3) Im·nH2O] (where M = La(III) or Ce(III), L = naphthylideneamino acids, Im = 1-methylimidazole or 1,2-dimethylimidazole and n = 1 or 2). The redox properties of some of the ternary complexes of La(III) and Ce(III) were examined using cyclic voltammetry in 0.1mol dm-3 TBAP/ DMSO solutions. The reduction potentials of the investigated complexes showed a dependence upon the nature of the amino acid of the ligand. The stability of the complexes is discussed on the basis of the thermal and electrochemical data. Copyright
