Evidence for the formation of UO2(NO3)4(2-) in an ionic liquid by EXAFS
Clotilde Gaillard1, Olga Klimchuk, Ali Ouadi
1University of Lyon, Institut de Physique Nucléaire de Lyon, CNRS-IN2P3, 69622 Villeurbanne cedex, France. c.gaillard@ipnl.in2p3.fr
Dalton Transactions (Cambridge, England : 2003)
|April 3, 2012
Abstract:
The complexation between uranium(vi) and nitrate ions in a hydrophobic ionic liquid (IL), namely [BMI][NO(3)] (BMI = 1-butyl-3-methylimidazolium(+)), is investigated by EXAFS spectroscopy. It was performed by dissolution of uranyl nitrate UO(2)(NO(3))(2)·6H(2)O or UO(2)(Tf(2)N)(2) (Tf(2)N = bis(trifluoromethylsulfonyl)imide (CF(3)SO(2))(2)N(-)). The formation of the complex UO(2)(NO(3))(4)(2-) is evidenced.


