Patent ID: 8859800

Claim:
A compound of formula I [Kt] z+ z [(R 1 )B(CN) 2 (OR*)] − I in which R 1 denotes a straight-chain or branched alkyl group having 1 to 20 C atoms which optionally contains at least one Cl, Br or I atom, at least one CN group and/or one or more oxygen or sulphur atoms, a straight-chain or branched alkenyl group having 2 to 20 C atoms and having one or more double bonds or a straight-chain or branched alkynyl group having 1 to 20 C atoms and having one or more triple bonds and optionally having a double bond, z is 1, 2, 3 or 4, R* denotes a straight-chain or branched alkyl group having 1 to 20 C atoms and [Kt] Z+ is an inorganic or organic cation.