Monocyclopentadienyl complexes of chromium, molybdenum or tungsten with a donor bridge

摘要

Substituted monocyclopentadienyl-, monoindenyl-, monofluorenyl- or heterocyclopentadienyl-complexes of chromium, molybdenum or tungsten have a substituent(s) on the heterocyclopentadieny ring with a rigid hybridised carbon or silicon atom bonded donor group not exclusively bonded via sp<3>. Independent claims are included for an olefin (co)polymerization process involving polymerizing an olefin(s) using the above complex, optional activator(s) and optional conventional catalyst(s), the obtained polymer and fibers, films and molded articles prepared from it.