Synthesis, spectral characterization, biological and fluorescence studies of lanthanum(III) complexes with 3-substituted-4-amino-5-hydrazino-1,2,4-triazole Schiff bases |
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Authors: | Prakash Gouda Avaji B. Nagaraja Reddy Sangamesh A. Patil Prema S. Badami |
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Affiliation: | (1) P.G. Department of Chemistry, Karnatak University, Dharwad, 580003, India;(2) Department of Chemistry, Shri Sharanabasaveshwar College of Science, Gulbarga, 585 102, India |
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Abstract: | Some lanthanum(III) complexes have been synthesized by reacting lanthanum(III) nitrate with Schiff bases derived from 3-substituted-4-amino-5-hydrazino-1,2,4-triazole and substituted salicylaldehydes. All these complexes are soluble in DMF and DMSO and the low molar conductance values observed indicates that they are non-electrolytes. Elemental analyses suggest the complexes have 1:1 stoichiometry of the type La · L · NO3 · H2O, and they were characterized further by spectral and thermogravimetric methods. Fluorescence spectra of one of the representative Schiff bases (II) and its lanthanum(III) complex were investigated in various solvents; the complexes were evaluated for their biological activity. |
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