A new family of molten salts is reported, based on the N-alkyl, N-alkyl pyrrolidinium cation and the bis (trifluoromethane sulfonyl) imide anion. Some of the members of the family are molten at room temperature, while the smaller and more symmetrical members have melting points around 100° C. Of the room-temperature molten salt examples, the methyl butyl derivative exhibits the highest conductivity; at 2× 10-3 S/cm this is the highest molten salt ...
