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Preparation of titanocene and zirconocene dichlorides bearing bulky 1,4-dimethyl-2,3-diphenylcyclopentadienyl ligand and their behavior in polymerization of ethylene
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SYSNO ASEP 0336710 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Preparation of titanocene and zirconocene dichlorides bearing bulky 1,4-dimethyl-2,3-diphenylcyclopentadienyl ligand and their behavior in polymerization of ethylene Title Příprava titanocen a zirkonocen dichloridů obsahujících objemný 1,4-dimethyl-2,3-difenylcyklopentadienylový ligand a jejich chování při polymerizaci ethylenu Author(s) Horáček, Michal (UFCH-W) RID, ORCID
Pinkas, Jiří (UFCH-W) RID, ORCID
Merna, J. (CZ)
Gyepes, R. (CZ)
Meunier, P. (FR)Source Title Journal of Organometallic Chemistry. - : Elsevier - ISSN 0022-328X
Roč. 694, č. 2 (2009), s. 173-178Number of pages 6 s. Language eng - English Country CH - Switzerland Keywords substituted cyclopentadienes ; titanocene ; zirconocene Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects KAN100400701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000262010200006 DOI 10.1016/j.jorganchem.2008.10.019 Annotation New metallocene dichlorides [eta(5)-(1,4-Me-2-2,3-Ph-2-C5H)(2)TiCl2] (2), [eta(5)-(1,4-Me-2-2,3-Ph-2-C5H)(2)ZrCl2] (3) and [eta(5)-(1,4-Me-2-2,3-Ph-2-C5H)eta(5)-(C5H5)ZrCl2] (4) were prepared from lithium salt of 1,4-dimethyl-2,3-diphenylcyclopentadiene (1) and [TiCl3(THF)(3)], [ZrCl4] and [eta(5)-(C5H5)ZrCl3(DME)], respectively. Compounds 2-4 were characterized by NMR spectroscopy, EI-MS and IR spectroscopy, and the solid state structure of 3 was determined by single crystal X-ray crystallography. The catalytic systems 3/MAO and 4/MAO were almost inactive in polymerization of ethylene at 30-50 degrees C, however, they exhibited high activity at temperature 80 degrees C. The catalyst formed from 2 and excess of MAO was practically inactive at all temperatures. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2010
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