Patent ID: 8586757

Claim:
A compound of formula (I) for catalysis: in which: L is a neutral ligand; X, X′ are anionic ligands; R 1 and R 2 are, independently, a hydrogen, a C 1 to C 6 alkyl, a C 1 to C 6 perhalogenoalkyl, an aldehyde, a ketone, an ester, an amide, a nitrile, an optionally substituted aryl, a pyridinium alkyl, a pyridinium perhalogenoalkyl or an optionally substituted C 5 or C 6 cyclohexyl, a C n H 2n Y or C n F 2n Y radical with n being between 1 and 6 and Y being an ion marker, or a radical of formula: R 2 can also be hydrogen or a C 1 to C 6 alkyl; R 1 can be a radical of formula (I bis) when the compound is formula I: R 3 is a C 1 to C 6 alkyl or a C 5 or C 6 cycloalkyl or a C 5 or C 6 aryl; R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 are, independently, hydrogen, a C 1 to C 6 alkyl, a C 1 to C 6 perhalogenoalkyl, or a C 5 or C 6 aryl; R 9 , R 10 , R 11 can form a heterocycle; X 1 is an anion selected from the group consisting of halogen, tetrafluoroborate ([BF 4 ] − ), [tetrakis-(3,5-bis-(trifluoromethyl)-phenyl)borate] ([BARF] − ), hexafluorophosphate ([PF 6 ] − ), hexafluorantimonate ([SbF 6 ] − ), hexafluoroarsenate ([AsF 6 ] − ), and trifluoromethylsulfonate ([(CF 3 ) 2 N] − ); R 1 and R 2 can form with the N and the C to which they are attached a heterocycle of formula: wherein hal is an halogen and R 12 is hydrogen, a C 1 to C 6 alkyl, or a C 5 or C 6 cycloalkyl or a C 5 or C 6 aryl.