| abstract |
Salts of formula (I). Formula I In Formula I, Q 1 and Q 2 are each independently a fluorine atom or a perfluoroalkyl group having 1 to 6 carbon atoms, L 1 is a divalent C1-C17 saturated hydrocarbon group which may have a single bond or a substituent, and one or more -CH 2 -contained in the saturated hydrocarbon group may be substituted with -O- or CO-, R 1 is an alkyl group having 1 to 6 carbon atoms containing a fluorine atom, Z + is an organic cation. |