| abstract |
Disclosed is an asymmetric BF3 complex which has a wide potential window, has excellent oxidation resistance and is therefore particularly useful as a solvent for an electrolyte solution for an electrochemical device. Specifically disclosed is an asymmetric BF3 complex represented by the general formula (1) wherein R1 and R2 independently represent an alkyl group having 1 to 6 carbon atoms, may be the same as or different from each other, may be branched, and may together form a ring. |