Dinuclear titanium complexes with methylphenylsilylene bridge between cyclopentadienyl rings. Synthesis, characterization and reactivity towards ethylene.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F10%3A10070048" target="_blank" >RIV/00216208:11310/10:10070048 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/10:00345810 RIV/60461373:22310/10:00022947

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Dinuclear titanium complexes with methylphenylsilylene bridge between cyclopentadienyl rings. Synthesis, characterization and reactivity towards ethylene.

Popis výsledku v původním jazyce

The new ansa-titanocene dichloride [{(SiMePh)(eta(5)-C5H4)(2)}TiCl2] (1) was prepared by one pot reaction, whereas synthesis of its methylated analogue [{(SiMePh)(eta(5)-C5Me4)(2)} TiCl2] (3) was performed in two steps with isolation of corresponding silane intermediate SiMePh(HC5Me4)(2) (2). The reaction of 1 and 3 with TiCl4 afforded the dinuclear complexes [(SiMePh){(eta(5)-C5R4)TiCl3}(2)] (R= H (4) and R = Me (5)). The catalysts formed from 4 and 5 after their activation with excess MAO exhibited amodest activity in ethylene polymerization. The polymer products consisted of high molar mass linear polyethylenes with a broad molar mass distribution. The presence of three paramagnetic titanium species in the mixture 4/MAO was revealed by EPR spectroscopy. All new prepared compounds 1-5 were characterized by multinuclear NMR, EI-MS, IR, and solid-state structures of 1, 3 and 5 were determined by X-ray single crystal diffraction.

Název v anglickém jazyce

Dinuclear titanium complexes with methylphenylsilylene bridge between cyclopentadienyl rings. Synthesis, characterization and reactivity towards ethylene.

Popis výsledku anglicky

The new ansa-titanocene dichloride [{(SiMePh)(eta(5)-C5H4)(2)}TiCl2] (1) was prepared by one pot reaction, whereas synthesis of its methylated analogue [{(SiMePh)(eta(5)-C5Me4)(2)} TiCl2] (3) was performed in two steps with isolation of corresponding silane intermediate SiMePh(HC5Me4)(2) (2). The reaction of 1 and 3 with TiCl4 afforded the dinuclear complexes [(SiMePh){(eta(5)-C5R4)TiCl3}(2)] (R= H (4) and R = Me (5)). The catalysts formed from 4 and 5 after their activation with excess MAO exhibited amodest activity in ethylene polymerization. The polymer products consisted of high molar mass linear polyethylenes with a broad molar mass distribution. The presence of three paramagnetic titanium species in the mixture 4/MAO was revealed by EPR spectroscopy. All new prepared compounds 1-5 were characterized by multinuclear NMR, EI-MS, IR, and solid-state structures of 1, 3 and 5 were determined by X-ray single crystal diffraction.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Organometallic Chemistry

ISSN

0022-328X

e-ISSN

—

Svazek periodika

695

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000276262600024

EID výsledku v databázi Scopus

—