Patent ID: 6875894

Claim:
A bis(alkylthio)carbenium salt of formula I in which R 1 is H, halogen, or a straight-chain, branched or cyclic alkyl having 1 to 25 carbon atoms, in which one or more H atoms are optionally replaced by halogen, —CN or by optionally substituted alkyl and/or aryl groups, and/or in which one or more non-adjacent —CH 2 — groups are optionally replaced, independently of one another, by —CO—, —O—CO—, —CO—O—, —O—, —S—, -E-, —C≡C—, —NH— or —N(CH 3 )—, and/or aryl, which are optionally monosubstituted or polysubstituted by halogen, —CN or straight-chain, branched and/or cyclic alkyl and/or aryl, and in which one or more CH groups are optionally replaced by N, E is CR 4 ═CR 5 or CHR 4 —CHR 5 , R 4 and R 5 are each, independently of one another, H, alkyl having 1-6 carbon atoms, F, Cl, Br, CF 3 or CN, R 2 and R 3 are, independently of one another, straight-chain, branched or cyclic alkyl having 1 to 12 carbon atoms, where R 2 and R 3 are optionally bridged with one another in such a way that the group is a 5- to 8-membered ring, and/or in which one or more H atoms are optionally replaced by halogen or by an optionally substituted alkyl and/or aryl group, and/or in which one or more non-adjacent —CH 2 — groups are optionally replaced, independently of one another, by —CO—, —O—, —S—, —CH═CH—, —C≡C—, —NH— or —N(CH 3 )—, and/or aryl, which are optionally monosubstituted or polysubstituted by halogen or straight-chain, branched and/or cyclic alkyl and/or aryl, and Y − is a non-coordinating or weakly coordinating anion.