A (perfluoroalkyl)dibenzonium salt represented by the following general formula ##STR1## wherein R.sub.f represents a perfluoroalkyl group having 1 to 10 carbon atoms, A represents a sulfur of selenium atom, R.sup.1 and R.sup.2, independently from each other, represent a hydrogen atom or a nitro group, X.sup..crclbar. represents a conjugated base of Bronsted acid, and n is 0 or 1. The said compound is useful as a reagent for introducing a perfluoroalkyl group.
一种由以下通用公式表示的(
全氟烷基)二
苯酚盐:其中R.sub.f代表具有1至10个碳原子的
全氟烷基基团,A代表
硫或
硒原子,R.sup.1和R.sup.2分别代表氢原子或硝基基团,X.sup..crclbar.代表布朗斯特酸的共轭碱基,n为0或1。所述化合物可用作引入
全氟烷基基团的试剂。