A HALOPYRROLE LIGAND FOR USE IN A CATALYST SYSTEM

摘要

A pyrrole ligand for an olefin oligomerisation catalyst system wherein the pyrrole ligand incorporates a halogen source and wherein the ligand is a halopyrrole or a derivative thereof. The halopyrrole may be a halopyrrole-containing compound. The halopyrrole-containing compound of the present invention is any pyrrole derivative of general formula X-(CH2)n-C4H4N, where X can be a halide selected from the group consisting of fluoride, chloride, bromide and/or iodide, and n can be any number greater than 0. Typical halopyrrole-containing compounds of the invention have from about 4 to about 20 carbon atoms per molecule. The halopyrrole-containing compounds include derivatives of pyrrole having a bromoalkyl group bonded to the pyrrole ring.