Studies on Some Mixed Ligand Ternary Complexes of Cerium(III) Employing 1-Nitroso-2-naphthol and Amino Acids

G.A. Thakur1,*, U.N. Dhaigude1 and P.V. Bhise2

1Department of Chemistry, Rayat Shikshan Sanstha’s, Mahatma Phule Arts, Science and Commerce College, Panvel-410 206, India

2Department of Chemistry, Yashwantrao Chavan Institute of Science, Satara-415 001, India

*Corresponding author: Tel/Fax: +91 22 27452561; E-mail: ganeshthakur68@yahoo.co.in

Abstract

The mixed ligand ternary complexes of cerium(III) with general formula [Ce(1N2N)2·(L)·2H2O] where (1N2N) = 1-nitroso-2-naphthol primary ligand and L = different amino acids (L-valine, L-serine and L-isoleucine ) as a secondary ligands have been prepared and characterized by IR, UV-visible spectroscopic technique, TG-DTA studies, elemental analysis, magnetic and molar conductance studies. The magnetic susceptibility study indicates paramagnetic nature of the complexes. The electrical conductance values of all the complexes shows their non-electrolytic nature. The metal-ligand bonding through nitrogen and oxygen atom was confirmed by FT-IR spectral studies. The antimicrobial activities of the compounds have been tested against S. aureus, C. diphtheria, E. coli and S. typhi. These complexes show better antibacterial activity than free ligand.

Keywords

Ternary complexes, Cerium, 1-Nitroso-2-naphthol, Amino acids, Antibacterial activity.

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