201358-30-7Relevant academic research and scientific papers
Metallocene dichlorides bearing acenaphthyl substituted cyclopentadienyl rings: Preparation and polymerization behavior
Repo, Timo,Jany, Gerhard,Hakala, Kimmo,Klinga, Martti,Polamo, Mika,Leskelae, Markku,Rieger, Bernhard
, p. 177 - 186 (1997)
The unbridged complex [bis(η5-7,9-diphenylcyclopenta[a]acenaphthadienyl)] zirconium dichloride (8) and two asymmetric ethylene bridged metallocenes {bis[1,2-(η5-7,9-diphenylcyclopenta[a]acenaphthadienyl)-1-phenyl] ethane} zirconium dichloride (9) and {[1-(η5-7,9-diphenylcyclopenta[a]acenaphthadienyl)-2-phenyl-2-(η5-9-fluorenyl)] ethane} zirconium dichloride (10) were prepared and used as catalysts for ethene and propene homopolymerization after activation with MAO. Whereas zirconocenes 8 and 9, that bear two acenaphthyl substituted Cp-rings, have only moderate activity, 10 produces polyethene with high activity and high molecular weight. In propene polymerization only atactic polymer was formed and the chain termination occurred mainly via β-methyl elimination. The solid state structures of compounds 8, 9 and 10 were determined by means of X-ray diffraction analysis.
