Abstract

Ganesh Anant Thakur^*, Uttam Narayan Dhaigude and Pramod Bhagawan Thakur 

DOI : http://dx.doi.org/10.13005/ojc/360406

The synthesis of mixed ligand La(III) and Ce(III) complexes with formula [M(1N2N)₂∙(L)·2H₂O] is reported by using 1-nitroso-2-naphthol (1N2N) as a primary ligand and L-phenylalanine, L-threonine (HL) as secondary ligands. The structures of reported complexes were established by UV-Visible, infrared spectroscopic techniques, magnetic susceptibility measurements, molar conductance study, elemental analysis and thermal studies. The conductance study showed non-electrolytic nature of complexes. The thermal study was found in accordance with structure of complexes. The metal-ligand coordination was confirmed by FT-IR spectral study. Furthermore the  lanthanum and cerium complexes were found diamagnetic and paramagnetic in nature respectively. The intraligand and LMCT transitions were confirmed by UV-Visible spectral study. The study to investigate antibacterial nature of compounds was done in vitro against E. coli, S. typhi Gram-negative and S. aureus, C. diphtheria Gram-positive bacteria.

Antibacterial Activity; Lanthanum; Cerium; Amino Acid; 1-nitroso-2-naphthol

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