Affiliation:
1. Materials Chemistry & Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research , Kalpakkam 603102 , India
2. Materials Chemistry & Metal Fuel Cycle Group, Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research , Kalpakkam 603102 , India
Abstract
Abstract
The uranyl (UO2
2+)-aliphatic dicarboxylic acid complexes are studied by luminescence and UV-Vis spectroscopy in acetonitrile (MeCN) medium. The ligands used are malonic acid (MA), succinic acid (SA), glutaric acid (GA), adipic acid (AA) and pimelic acid (PA). The complexes of UO2
2+ with the above ligands showed well resolved luminescence spectra at pH 4.0 with M/L = 5. Both luminescence and UV-Vis spectra indicated the formation of 1:2 and 1:3 complexes of UO2
2+ with MA and GA, AA, PA, respectively. DFT computations indicated the formation of 1:2 chelate complex of UO2
2+ with MA and two types of 1:3 complexes of UO2
2+ with SA, GA, AA and PA. Furthermore, the effect of solvent (water and acetonitrile) on the UO2
2+-ligand complexes has been performed using COSMO model. The present study demonstrates, for the first time, the formation of tris complexes of uranyl with these ligands in acetonitrile medium.
Subject
Physical and Theoretical Chemistry
Cited by
3 articles.
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