| 摘要 |
<p>Use of a heterocyclopentadienyl of the general formula C4AR4, wherein A is a Group 15 element and each R, which is connected to a carbon of the cyclodienide ring, can be the same or different and is chosen from hydrogen or an organic substituent (optionally containing one or more hetero-atoms), in complex with a Group 4 or 5 metal, in a catalyst composition for the (co)oligomerisation or (co)polymerisation of olefinically unsaturated hydrocarbons, Group 4 and 5 metal complexes comprising such heterocyclopentadienyl, catalyst compositions comprising such organometal complexes and the process of (co)oligomerisation or (co)polymerisation olefinically unsaturated hydrocarbons in the presence of such catalyst compositions.</p> |
