Patent ID: 7091362

Claim:
A compound of the formula (I) where A is a radical of the formula (II) or (III) and B independently of A is a radical of the formula (IV) or (IVa) or —S(NR 1 R 1 ) 2 (IVa), where the individual R 1 are identical or different and are each an unbranched or branched C 1 –C 10 alkyl, unbranched or branched C 2 –C 10 alkylene, or C 6 –C 12 aryl where one or more NR 1 R 1 groups are optionally also a 3- to 7-membered, saturated or unsaturated ring that is formed from one nitrogen atom, the remainder of the ring atoms being carton atoms, where the radical of the formula (II) and the group in formula (IV) can also be the radical of a saturated or unsaturated 4- to 8-membered ring that contains two nitrogen atoms, the remainder of the ring atoms being carbon atoms, X is nitrogen or phosphorus, and An ⊖ is one equivalent of an anion.