A salt represented by the formula (X):
wherein Q1 and Q2 each independently represent a fluorine atom etc., L1 and L2 independently each represent a C1-C17 divalent saturated hydrocarbon group, ring W1 represents a C3-C36 saturated hydrocarbon ring, R2 is independently in each occurrence a hydroxyl group etc., s represents an integer of 0 to 2, Z+ represents an organic counter ion, and W10 represents a group represented by the formula (X-1):
wherein ring W2 represents a C4-C36 saturated hydrocarbon ring in which one or more —CH2— can be replaced by —O— or —CO—, with the proviso that at least one —CH2— in the C4-C36 saturated hydrocarbon ring is replaced by —CO—, R3 is independently in each occurrence a C1-C6 alkyl group etc., and t represents an integer of 0 to 2, or a group represented by the formula (X-2):
wherein ring W3 represents a C3-C36 saturated hydrocarbon ring, R4 is independently in each occurrence a hydroxyl group etc., R5 is independently in each occurrence a C1-C6 alkyl group etc., v represents an integer of 1 to 3, and w represents an integer of 0 to 2.
一种由
化学式(X)表示的盐:其中Q1和Q2分别独立表示
氟原子等,L1和
L2分别独立表示C1-C17二价饱和碳氢化合物基团,环W1表示C3-C36饱和碳氢化合物环,R2在每次出现时独立表示一个羟基等,s表示0到2的整数,Z+表示有机对离子,W10表示由
化学式(X-1)表示的基团:其中环W2表示一个C4-C36饱和碳氢化合物环,其中一个或多个-
CH2-可以被-O-或-CO-替代,但至少一个C4-C36饱和碳氢化合物环中的- -被-CO-替代,R3在每次出现时独立表示C1-C6烷基基团等,t表示0到2的整数,或由
化学式(X-2)表示的基团:其中环W3表示一个C3-C36饱和碳氢化合物环,R4在每次出现时独立表示一个羟基等,R5在每次出现时独立表示一个C1-C6烷基基团等,v表示1到3的整数,w表示0到2的整数。