Pentacyclic anion salts or tetrazapentalene derivatives and their uses as ionic conducting materials

An electrochemical generator comprising a negative electrode and a positive electrode separated by an electrolyte, wherein the electrolyte is an ionically conductive material comprising an ionic compound in solution in a solvent, characterised in that the ionic compound comprises at least one anionic part associated to at least one cationic part M in sufficient number to ensure the electronic neutrality of the whole, characterized in that M is a hydroxonium, a nitrosonium NO, an ammonium —NH4, a metallic cation having a valency m, an organic cation having a valency m or an organometallic cation having a valency m, and in that the anionic part is pentacyclic and corresponds to the following formula:

• in which the groups Xi represent independently from one another a group selected from N or C(Yc), it being understood that among the five groups Xi forming the cycle, at most four groups Xi comprise an hydrogen atom, at least one group Xi is C(Yc), and
• —Yc represent H, or a group attracting electrons selected from the group consisting of:
• F, Cl, Br, —C≡N, —S—C≡N, —N═C═S, —N═C═O, —NO2, CnF2n+1—, CnF2n+1, CnF2n+1, —CH2—, —OC2F4H, —SCF3, —SCnF2n+1, —SC2F4H, —OCF═CF2, —SCF═CF2, FSO2;
• radicals QSO2—, —CO2Q, Q—N—SO2—, QCO—, in which Q is selected from the substituents selected from the group consisting of:
• a) alkyl or alkenyl radicals, aryl, arylalkyl, alkylaryl or alkenylaryl radicals, alicyclic or heterocyclic radicals, including polycyclic radicals, said radicals being possibly halogenated or perhalogenated and/or possibly carrying at least one ether, thioether, amine, imine, amide, carboxyl, carbonyl, isocyanate, isothiocyanate, hydroxy functional group;
• b) monocyclic, polycyclic or condensed aromatic radicals in which the aromatic nuclei and/or at least one substituent of a nucleus comprise heteroatoms such as nitrogen, oxygen, sulfur;
• c) polymer radicals;
• d) radicals having one or more cationic ionophoric groups and/or one or more anionic ionophoric groups;
• radicals comprising one or more aromatic nuclei possibly containing at least one nitrogen, oxygen, sulfur or phosphorus atoms, said nuclei may possibly be condensed nuclei and/or the nuclei may possibly carry at least one substituent selected from halogens, —CN, —NO2, —SCN, —N3, CF2═CF—O—, radicals RF— and RFCH2— in which RF is a perfluoroalkyl radical having 1 to 2 carbon atoms, fluoroalkyloxy groups, fluoroalkylthioxy groups, alkyl, alkenyl, oxa-alkyl, oxaalkenyl, aza-alkyl, aza-alkenyl, thia-alkyl, thia-alkenyl radicals, polymer radicals, radicals having at least one cationic ionophoric group and/or at least one anionic ionophoric group;
• or two substituents Yc together forming a cycle having 4 to 8 chains, said cycle possibly being of aromatic conjugated nature;
• or one substituent YC is a multivalent radical (including a dendrimer) connected to at least one pentacyclic anionic group;
• or one of the substituents YC represent a recurring unit of a polymer;
• wherein a least one substituent YC is —C≡N.