Synthesis and characterization of peroxo complexes of uranium(VI) with some Mannich base ligands |
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Authors: | Balgar Singh Simpy Mahajan Haq N Sheikh Mohita Sharma and Bansi L Kalsotra |
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Institution: | (1) Department of Chemistry, University of Jammu, Jammu, 1800 06, India; |
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Abstract: | Abstract Uranium(VI) peroxo complexes of composition UO(O2)L–L(NO3)2], where L–L are the Mannich base ligands morpholinobenzyl urea, piperidinobenzyl urea, morpholinobenzyl thiourea, piperidinobenzyl
thiourea, morpholinomethyl thiourea, piperidinomethyl thiourea, or morpholinomethyl urea, are reported. The synthesized complexes
were characterized by use of a variety of physicochemical techniques, viz. elemental analysis, molar conductivity, magnetic
susceptibility measurements, IR, electronic, mass, 1H NMR, and 13C NMR spectroscopy, and TGA/DTA studies. These studies revealed that the complexes are both non-electrolytic and diamagnetic
in nature. The ligands are bound to the metal in a bidentate mode through carbonyl oxygen or thiocarbonyl sulfur and the ring
nitrogen. Mass spectra confirm the molecular mass of the complexes. The antifungal activity of the complexes is greater than
that of the corresponding free ligands. |
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Keywords: | |
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