Patent ID: 7314844

Claim:
A catalyst of formula (3a) or (3b): wherein, R 7 and R 8 are independently hydrogen, halogen, cyano, nitro, hydroxy, amino, thiol, an optionally substituted hydrocarbyl, perhalogenated hydrocarbyl, an optionally substituted heterocyclyl, an optionally substituted hydrocarbyloxy, an optionally substituted mono or di-hydrocarbylamino, an optionally substituted hydrocarbylthio, an optionally substituted acyl, an optionally substituted ester, an optionally substituted carbonate, an optionally substituted amide, or an optionally substituted sulphonyl or sulphonamido group, or comprise part of a fused ring; R 9 and R 10 are independently halogen, cyano, nitro, hydroxy, amino, thiol, an optionally substituted hydrocarbyl, perhalogenated hydrocarbyl, an optionally substituted heterocyclyl, an optionally substituted hydrocarbyloxy, an optionally substituted mono or di-hydrocarbylamino, an optionally substituted hydrocarbylthio, an optionally substituted acyl, an optionally substituted ester, an optionally substituted carbonate, an optionally substituted amide, or an optionally substituted sulphonyl or sulphonamido group, or R 9 & R 10 optionally are linked in such a way as to form an optionally substituted ring(s); Y 1 is a neutral ligand; and X is an anion.