Patent ID: 8648202

Claim:
A transition-metal complex containing at least one compound of the formula I wherein R 1 and R 2 are each, independently of one another, a straight-chain or branched perfluoroalkyl group having 2 to 12 C atoms, A is O, X stands for H, straight-chain or branched alkyl groups having 1 to 18 C atoms, cycloalkyl having 3 to 7 C atoms, alkenyl having 2 to 12 C atoms, alkynyl having 2 to 12 C atoms, aryl, alkyl-aryl, Si(R 0 ) 3 or Sn(R 0 ) 3 , R 0 stands for a straight-chain or branched alkyl group haying 1 to 8 C atoms, and n stands for the integer 1, in a complex with a transition metal.