Ionic conducting material having good anticorrosive properties

A compound having by one of the formulae

• 1/mM⊕[(ZSO2)2N]⊖, 1/mM⊕[(ZSO2)3C]⊖ or 1/mM⊕[(ZSO2)2CQ]⊖,
• in which:
• Q is —H, —COZ, SO2Z or Z;
• each substituent Z independently is a fluorine atom or an optionally perfluorinated organic group which optionally contains at least one polymerizable functional group, at least one of the substituents Z being a fluorine atom;
• M is a cation selected from the group consisting of an alkali metal different from Li⊕, an alkaline-earth metal, a transition metal, zinc, cadmium, mercury, a rare earth, diazonium ion, phosphonium ion, sulphonium ion, oxonium ion, and an organic cation NuR⊕, in which Nu is selected from the group consisting of ammonia, alkylamines, pyridines, imidazoles, amidines, guanidines and alkaloids, wherein R is hydrogen, an alkyl group or an oxaalkyl group containing from 1 to 20 carbon atoms or an aryl group containing from 6 to 30 carbon atoms;
• at least one substituent Z being an organic group which contains a functional group when M is an alkali metal other than Li or an alkaline earth metal;
• and
• m is the valency of the cation M.

An ion conduction material, which comprises at least one ionic compound in an aprotic solvent, wherein the ionic compound has one of the formula

• (1/mM)⊕[(FSO2)2N]⊖, (1/mM)⊕[(FSO2)3C]⊖
• and
• (1/mM)⊕[(FSO2)2CQ]⊖,
• wherein:
• Q is —H, —COZ or Z;
• each substituent Z independently is a fluorine atom;
• M is a cation selected from the group consisting of an alkali metal, an alkalino-earth metal a transition metal, zinc, cadmium, mercury, a rare earth, diazonium ion, phosphonium ion, sulphonium ion, oxonium ion, and an organic cation NuR+, in which Nu is selected from the group consisting of ammonia, alkylamines, pyridines, imidazoles, amidines, guanidines, and alkaloids, wherein R is hydrogen, an alkyl group or an oxaalkyl group containing from 1 to 20 carbon atoms or an aryl group containing from 6 to 30 carbon atoms;
• and
• m is the valency of the cation M.

A process for preparing of a compound having one of the formulae

• (1/mM)⊕[(FSO2)2N]⊖, (1/mM)⊕[(FSO2)3C]⊖ or (1/mM)⊕[(FSO2)2CQ]⊖, in which:
• Q—s—H, —COZ or Z;
• M is a cation selected from the group consisting of Li⊖, a transition metal, zinc, cadmium, mercury, a rare earth, diazonium ion, phosphonium ion, sulphonium ion, oxonium ion, and an organic cation NuR+, in which Nu is selected from the group consisting of ammonia, alkylamines, pyridines, imidazoles, amidines, guanidines and alkaloids, wherein R is hydrogen, an alkyl group or an oxaalkyl group containing from 1 to 20 carbon atoms or an aryl group containing from 6 to 30 carbon atoms;
• and
• m is the valency of the cation M,
• which process comprises reacting a corresponding acid selected from the group consisting of H[(FSO2)2N], H[(FSO2)3C] or H[(FSO2)2CQ], respectively, in an unreactive aprotic solvent, with a salt of the cation M which is selected so as to form in the course or the reaction, a volatile acid or an acid which is insoluble in the reaction mixture and whose basicity is sufficiently weak not to affect the S—F.