KOPS - Das Institutionelle Repositorium der Universität Konstanz

ansa-metallocene derivatives XXXIII. 2-Dimethylamino-substituted bis-indenyl zirconium dichloride complexes with and without a dimethylsilyl bridge : syntheses, crystal structures and properties in propene polymerization catalysis

ansa-metallocene derivatives XXXIII. 2-Dimethylamino-substituted bis-indenyl zirconium dichloride complexes with and without a dimethylsilyl bridge : syntheses, crystal structures and properties in propene polymerization catalysis

Zitieren

Dateien zu dieser Ressource

Prüfsumme: MD5:d6abbcf9cd21893938aa02cbd6ce8c85

BARSTIES, Elke, Stefan SCHAIBLE, Marc-Heinrich PROSENC, Ursula RIEF, Werner RÖLL, Oliver WEYAND, Birgit DORER, Hans-Herbert BRINTZINGER, 1996. ansa-metallocene derivatives XXXIII. 2-Dimethylamino-substituted bis-indenyl zirconium dichloride complexes with and without a dimethylsilyl bridge : syntheses, crystal structures and properties in propene polymerization catalysis. In: Journal of Organometallic Chemistry. 520(1-2), pp. 63-68. ISSN 0022-328X. Available under: doi: 10.1016/0022-328X(96)06263-8

@article{Barsties1996ansam-23917, title={ansa-metallocene derivatives XXXIII. 2-Dimethylamino-substituted bis-indenyl zirconium dichloride complexes with and without a dimethylsilyl bridge : syntheses, crystal structures and properties in propene polymerization catalysis}, year={1996}, doi={10.1016/0022-328X(96)06263-8}, number={1-2}, volume={520}, issn={0022-328X}, journal={Journal of Organometallic Chemistry}, pages={63--68}, author={Barsties, Elke and Schaible, Stefan and Prosenc, Marc-Heinrich and Rief, Ursula and Röll, Werner and Weyand, Oliver and Dorer, Birgit and Brintzinger, Hans-Herbert} }

Weyand, Oliver Prosenc, Marc-Heinrich Dorer, Birgit Röll, Werner Barsties, Elke Weyand, Oliver deposit-license Schaible, Stefan 1996 Röll, Werner Rief, Ursula ansa-metallocene derivatives XXXIII. 2-Dimethylamino-substituted bis-indenyl zirconium dichloride complexes with and without a dimethylsilyl bridge : syntheses, crystal structures and properties in propene polymerization catalysis Barsties, Elke Prosenc, Marc-Heinrich 2013-08-05T09:03:13Z eng Brintzinger, Hans-Herbert Bis(2-N,N-dimethylamino-indenyl) zirconium dichloride, (2-(CH<sub>3</sub>)<sub>2</sub>N-C<sub>9</sub>H<sub>6</sub>)<sub>2</sub>ZrCl<sub>2</sub>, and dimethylsilyl-bridged bis(2-N,N-dimethylamino-indenyl) zirconium dichloride, (CH<sub>3</sub>)<sub>2</sub>Si(2-(CH<sub>3</sub>)<sub>2</sub>N-C<sub>9</sub>H<sub>5</sub>)<sub>2</sub>ZrCl<sub>2</sub>, were prepared by reaction of the corresponding ligand lithium salts with ZrCl<sub>4</sub> in toluene. Diffractometric structure determinations reveal C<sub>2</sub>-symmetric complex geometries for both complexes. An increased electron density at the Zr center of the dimethylamino-substituted complexes is indicated by reduction potentials which are 0.3–0.4 V more negative than those of their unsubstituted analogs. When activated with methyl aluminoxane in toluene solution, (CH<sub>3</sub>)<sub>2</sub>Si(2-(CH<sub>3</sub>)2N-C<sub>9</sub>H<sub>5</sub>)<sub>2</sub>ZrCl<sub>2</sub> catalyzes the polymerization of propene to polymers with a microstructure comparable with that of polymers produced with other Me<sub>2</sub>Si-bridged bis(indenyl)ZrCl<sub>2</sub> complexes, but with a substantially increased fraction of i-propyl end groups derived from alkyl exchange between Zr-polymer and AlMe species. Schaible, Stefan 2013-08-05T09:03:13Z Brintzinger, Hans-Herbert Rief, Ursula Dorer, Birgit Journal of Organometallic Chemistry ; 520 (1996), 1-2. - S. 63-68

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

Barsties_239179.pdf 243

Das Dokument erscheint in:

KOPS Suche


Stöbern

Mein Benutzerkonto