We report the electrochemical properties of Group 15 quaternary alkyl bistriflimide salts, which have very wide electrochemical windows (between +2.6 and −3.4 V vs. Fc+/Fc for [(Me)4As][N(SO2CF3)2]) when used as supporting electrolytes in MeCN and which can be used for the electrodeposition of very electropositive metals, including Eu, in the molten state.
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Bhatt et al. (2002) studied this question.