Ionic conducting material having good anticorrosive properties

A process for the preparation of a compound having the formulae (1/mM).sup..sym. ((ZY).sub.2 N), (1/mM).sup..sym. ((ZY).sub.3 C) or (1/mM).sup..sym. ((ZY).sub.2 CQ).sup..crclbar., wherein:

• Y is SO.sub.2 or POZ;
• Q is H, COZ or Z;
• when Y is POZ, 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 is a fluorine atom;
• when Y is SO.sub.2, each substituent Z independently denotes a fluorine atom or an optionally perfluorinated organic group which optionally contains at least one polymerizable function group, at least one of the substituents Z being a fluorine atom and at least one substituent Z is said organic group;
• M is a cation selected from the group consisting of an alkali metal, 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.sup.+, in which Nu is selected from the group consisting of ammonia, alkylamines, pyridines, imidazoles, amidines, guanidines and alkaloids, and 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,
• m is the valency of M,
• which process comprises reacting a corresponding acid, H((ZY).sub.2 N), H((ZY).sub.3 C) or H((ZY).sub.2 CQ), respectively, in an unreactive aprotic solvent, with a salt of the cation M which is selected so as to form in the course of 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 bond when Y is SO.sub.2 or to affect the P--F bond when Y is POF.

An ionically conductive material, which comprises at least one ionic compound in solution in an aprotic solvent, wherein the ionic compound is selected from the group consisting of compounds consisting of those represented by one of the formulae (1/mM).sup..sym. ((ZY).sub.2 N).sup..crclbar., (1/mM).sup..sym. ((ZY).sub.3 C).sup..crclbar. or (1/mM).sup..sym. ((ZY).sub.2 CQ).sup..crclbar., wherein:

• Y is SO.sub.2 or POZ;
• Q is --H, --COZ or Z:
• each substituent Z is independently a fluorine atom or another functional group, wherein said another functional group and at least one fluorine atom are present;
• and wherein said another functional group Z is selected from the group consisting of:
• a) C1-C30 alkyl or C1-C8 perhaloalkyl radicals, C6-C12 aryl or perhaloaryl radicals, arylalkyl radicals, oxaalkyl, azaalkyl, thiaalkyl radicals or heterocyclic rings;
• and
• b) a radical which contains at least one ethylenic unsaturation or a condensable group or a dissociable group;
• a mesomorphic group, a chromophoric group, a doped or autodoped electronic conductor polymer, a hydrolysable alkoxysilane;
• a polymeric chain;
• a group which contains a scavenger for free radicals;
• a dissociating dipole;
• a redox couple;
• a complexing ligand;
• a zwitterion;
• or a functional group polymerizable by a radical reaction, by an anion reaction or by a reaction of Vandenberg;
• and
• M is a cation selected from the group consisting of an alkali metal, an alkaline earth metal, a transition metal, zinc, cadmium, mercury, a rare earth, and diazonium ions, phosphonium ions, sulphonium ions, oxonium ions, and from the organic cations NuR.sup.+, in which Nu is selected from the group consisting of ammonia, alkylamines, pyridines, imidazoles, amidines, guanidines and alkaloids, and 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.