C. Rao, K. Venkatesan, K. Nagarajan
Aug 1, 2009
Citations
1
Influential Citations
81
Citations
Quality indicators
Journal
Electrochimica Acta
Abstract
Abstract N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (BMPyNTf 2 ) was synthesized and characterized by CHNS elemental analysis, 1 H and 13 C NMR and IR spectroscopy. Europium tris[bis(trifluoromethylsulfonyl)imide] (Eu(NTf 2 ) 3 ) was prepared and studied for the electrochemical behavior of Eu(III) in BMPyNTf 2 at glassy carbon and stainless steel working electrodes at 298–373 K by cyclic voltammetry, chronopotentiometry and chronoamperometry. Cyclic voltammogram of Eu(III) in BMPyNTf 2 consisted of a quasi-reversible cathodic wave at −0.45 V (vs. Fc/Fc + , 373 K), which could be attributed to the reduction of Eu(III) to Eu(II) and an irreversible wave at −2.79 V (vs. Fc/Fc + ) due to reduction of Eu(II) to Eu(0). The diffusion coefficient of Eu(III) in BMPyNTf 2 was determined to be in the range of ∼10 −7 cm 2 s −1 by various electrochemical methods and the charge transfer rate constant was determined to be ∼10 −5 cm s −1 by cyclic voltammetry.