Group 15 quaternary alkyl bistriflimides: ionic liquids with potential application in electropositive metal deposition and as supporting electrolytes

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.