| abstract |
There are described novel chiral rhodium-diphosphine complexes of the formula n n [Rh (X) (Y) (L.sub.0,1,2)].sub.1,2 I n n wherein X, which may be fixed to a carrier, is Z--COO - , wherein Z is ##STR1## perfluorophenyl, perfluorobiphenyl or a residue of the formula ##STR2## and R 1 , R 2 and R 3 is halogen, lower alkyl, perfluorophenyl, perfluoro-C 1-20 -alkyl, hydrogen or the group --COA or AOC--(CF 2 ) n -- in which A is --OR or --NR' 2 , except that at least one of the substituents R 1 , R 2 and R 3 is fluorine, R is hydrogen, lower alkyl or a cation, R' is hydrogen or lower alkyl and n is 1 to 20 and wherein Y is a chiral diphosphine ligand and L is a neutral ligand. |