Patent ID: 8846922

Claim:
Compounds of the formula I Kt z+ z[P(R f ) n F 5-n X] − I, where R f in each case, independently of one another, denotes a straight-chain or branched fluoroalkyl group having 1 to 8 C atoms, X denotes OR, Ac, OAr or OHet, Ac denotes a carboxyl group OC(O)R, also including carboxyl groups of an aliphatic dicarboxylic acid resulting in compounds having the formula Ib x [Kt] z+ y [(R f ) n PF 5-n (OC(O)—R′—C(O)O)F 5-n P(R f ) n ] 2− Ib, where if z denotes 1 then x denotes 2 and y denotes 1, if z denotes 2 then x denotes 1 and y denotes 1, if z denotes 3 then x denotes 2 and y denotes 3, and if z denotes 4 then x denotes 1 and y denotes 2 and R′ denotes a single bond or an alkylene group having 1 to 4 C atoms, Ar denotes an aryl group having 6 to 12 C atoms, which may be unsubstituted or substituted by Hal, NH 2 , NAlk 2 , NHAlk, NO 2 , CN, SO 3 H or OR, Alk denotes a straight-chain or branched alkyl group having 1 to 12 C atoms, Het denotes a heteroaryl group having 5 to 13 C atoms, which may be unsubstituted or substituted by Hal, NH 2 , NAlk 2 , NHAlk, NO 2 , CN, SO 3 H or OR, R denotes H, a straight-chain or branched alkyl group having 1 to 20 C atoms, which may be partially substituted by Hal, NH 2 , NHAlk, NAlk 2 , OH, NO 2 , CN or SO 3 H, or denotes a straight-chain or branched alkenyl group having 2 to 20 C atoms, which may contain a plurality of double bonds, where one or two non-adjacent carbon atoms of the alkyl or alkenyl group which are not bonded to the heteroatom may be replaced by atoms and/or atom groups selected from the group —O—, —S—, —S(O)—, —SO 2 —, NH, —C(O)—, —O—C(O)— or —C(O)—O— and Kt denotes a stabilized proton, a metal cation or an organic cation, Hal denotes F, Cl, Br or I, z denotes 1, 2, 3 or 4, and n denotes 1, 2 or 3, and/or tautomers or stereoisomers thereof, including mixtures thereof in all ratios.