| 摘要 |
A process for the production of half-sandwich transition metal based catalysts which comprises reacting in a hydrocarbon medium at a temperature from about 20 DEG C to 60 DEG C for approximately one to ten hours under an inert atmosphere (a) 1 equivalent of a metallocene dihalide of the general formula (L)(L')MX2 wherein M is a metal atom from Groups IIIB to VIII or the Lanthanide series of the Periodic Table of Elements; X is a halogen atom; L and L' are the same or different, may be bridged to one another or unbridged and are independently a substituted or unsubstituted, pi -bonded ligand coordinated to M, with (b) 3 equivalents of an organic acid of formula (I) wherein Q can be the same or different and is independently selected from the group consisting of -O, -NR, -CR2 and -S; Y is either C or S; Z is selected from the group consisting of -OR, -NR2, -CR3, -SR, SiR3, -PR2, -H, substituted or unsubstituted aryl groups; and R can be same or different and is independently a group containing carbon, silicon, nitrogen, oxygen, and/or phosphorus, and (c) 3 equivalents of a trialkylamine of the formula NR'3 wherein R' is a hydrocarbon group containing from 1 to 20 carbon atoms and thereafter recovering the product.
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