A salt represented by formula (I):
wherein Q1 and Q2 independently represent a fluorine atom or a C1 to C6 perfluoroalkyl group, R1 and R2 in each occurrence independently represent a hydrogen atom, a fluorine atom or a C1 to C6 perfluoroalkyl group, z represents an integer of 0 to 6, X1 represents *—CO—O—, *—O—CO— or —O—, * represents a binding position to C(R1)(R2) or C(Q1)(Q2), A1 represents a C4 to C24 hydrocarbon group having a C4 to C18 divalent alicyclic hydrocarbon moiety, A2 represents a C2 to C12 divalent hydrocarbon group, R3 and R4 independently represent a hydrogen atom or a C1 to C6 monovalent saturated hydrocarbon group, R5 represents a hydrogen atom, a fluorine atom, or a C1 to C6 alkyl group where a hydrogen atom may be replaced by a fluorine atom, and Z+ represents an organic cation.
式 (I) 所代表的盐:
其中 Q1 和 Q2 独立地代表
氟原子或 C1 至 C6
全氟烷基,R1 和 R2 在每次出现时独立地代表氢原子、
氟原子或 C1 至 C6
全氟烷基,z 代表 0 至 6 的整数,X1 代表 *-CO-O-、*-O-CO- 或 -O-,* 代表与 C(R1)(R2)或 C(Q1)(Q2)的结合位置、A1 代表具有 C4 至 C18 二价脂
环烃分子的 C4 至 C24 烃基,A2 代表 C2 至 C12 二价烃基,R3 和 R4 独立地代表氢原子或 C1 至 C6 单价饱和烃基,R5 代表氢原子、
氟原子或 C1 至 C6 烷基,其中氢原子可被
氟原子取代,Z+ 代表有机阳离子。