SYNTHESIS OF ZIRCONOCENE SILSESQUIOXANE COMPLEXES AND THEIR ETHENE POLYMERIZATION ACTIVITY IN SYSTEMS WITH METHYLALUMINOXANE

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F10%3A10051739" target="_blank" >RIV/00216208:11310/10:10051739 - isvavai.cz</a>
Alternative codes found
RIV/61388955:_____/10:00351870
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
SYNTHESIS OF ZIRCONOCENE SILSESQUIOXANE COMPLEXES AND THEIR ETHENE POLYMERIZATION ACTIVITY IN SYSTEMS WITH METHYLALUMINOXANE
Original language description
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 zirconocenedichloride 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)].
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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