Patent ID: 6841638

Claim:
Ionic compound corresponding to one of the formulae in which: M m+ is a proton or a metal cation having the valency m, chosen from ions of alkali metals, of alkaline-earth metals, of transition metals or of rare-earth metals, or an organic onium cation or an organometallic cation, 1≦m≦3; Z 1 and Z 2 , denoted below by Z i , represent, independently of each other, O, NC≡N, C(C≡N) 2 , NS(═Z) 2 R 6 or C[S(═Z) 2 R 6 ] 2 , Z having the same meaning as Z i . R 1 , R 2 , R 6 and R 6 ′, denoted below by R i , represent, independently of each other, Y, YO—, YS—, Y 2 N— or F; R f , and R f ′ represent a perfluoroalkyl radical; Y represents a monovalent organic radical chosen from alkyl, alkenyl, oxaalkyl, oxaalkenyl, azaalkyl, azaalkenyl, aryl, alkylaryl or perfluoroalkyl radicals, or from the radicals obtained from the abovementioned radicals by substitution, in the chains and/or the aromatic part, with hetero atoms chosen from halogens, oxygen, nitrogen, sulfur or phosphorus; with the proviso that if said heteroatoin is sulfur or phosphorus, said sulfur or phosphorus atom can optionally be in the form of a —SO— group, a —SO 2 group or a >PO— group, or alternatively Y is a repeating unit of a polymeric backbone, wherein the cation M m+ is an organometallic cation chosen from metallocenium ions, metal cations coordinated by O, S, Se, N, P or As atoms and borne by organic molecules, trialkylsilyl, tetraalkylgermanyl or dialkylstannyl groups in which the alkyl radicals contain from 1 to 10 carbon atoms, and wherein the organometallic cation forms part of a polymer chain.