Number of the records: 1
SYNTHESIS OF ZIRCONOCENE SILSESQUIOXANE COMPLEXES AND THEIR ETHENE POLYMERIZATION ACTIVITY IN SYSTEMS WITH METHYLALUMINOXANE
- 1.
SYSNO ASEP 0351870 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title SYNTHESIS OF ZIRCONOCENE SILSESQUIOXANE COMPLEXES AND THEIR ETHENE POLYMERIZATION ACTIVITY IN SYSTEMS WITH METHYLALUMINOXANE Author(s) Varga, V. (CZ)
Pinkas, Jiří (UFCH-W) RID, ORCID
Gyepes, R. (CZ)
Štěpnička, P. (CZ)
Horáček, Michal (UFCH-W) RID, ORCID
Bastl, Zdeněk (UFCH-W) RID, ORCID
Mach, Karel (UFCH-W) ORCID, RIDSource Title Collection of Czechoslovak Chemical Communications. - : Ústav organické chemie a biochemie AV ČR, v. v. i. - ISSN 0010-0765
Roč. 75, č. 1 (2010), s. 105-119Number of pages 15 s. Language eng - English Country CZ - Czech Republic Keywords zircone ; zirconocene ; ethene polymerization Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects KAN100400701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) LC06070 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000274668100006 DOI 10.1135/cccc2009552 Annotation Protocols for obtaining defined zirconocene complexes with polyhedral oligomeric silsesquioxanes with mono-, di-, and trisilanol functionality (SIPOSS, DIPOSS, and TRIPOSS) were established. The TRIPOSS silanolates binding one zirconocene and one chlorozirconocene moiety, [{(c-C5H9)(7)Si7O9O3}Zr2Cl(eta(5)-C5H4R)(4)] (1, R = Bu; 2, R = H), were obtained by reacting the silanol with the respective zirconocene dichloride and triethylamine in CH2Cl2 in a 1.0:3.0:3.0 molar ratio, an excess of the zirconocene dichloride being required to suppress intramolecular dehydration of TRIPOSS. The related SIPOSS complex, [{(c-C5H9)(7)Si8O12O}(2)Zr(eta(5)-C5H4Bu)(2)] (3), was prepared similarly at the stoichiometric ratio of [ZrCl2(eta(5)-C5H4Bu)(2)]/ SIPOSS/NEt3 equal to 1.0:2.0:2.0. When employed in the 1.0:1.0:1.0 ratio, the same reagents afforded only the impure complex [{(c-C5H9)(7)Si8O12O}ZrCl(eta(5)-C5H4Bu)(2)] (4), contaminated with 3 and unreacted [ZrCl2(eta(5)-C5H4Bu)(2)]. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2011
Number of the records: 1