Oxide-Bridged Heterobimetallic Aluminum/Zirconium Catalysts for Ethylene Polymerization

Journal article


Publication Details

Author(s): Boulho C, Zijlstra H, Harder S
Journal: European Journal of Inorganic Chemistry
Publisher: Wiley-VCH Verlag
Publication year: 2015
Journal issue: 12
Pages range: 2132-2138
ISSN: 1434-1948


Abstract


A bimetallic aluminum/zirconium complex Cp*Zr-2(Me)OAl(DIPH) [DIPH-H-2 = 3,3-bis(2-methylallyl)-(1,1-biphenyl)-2,2-diol; Cp* = C5Me5] was prepared in good yield by the reaction of (DIPH)AlMe with Cp*Zr-2(Me)OH. In contrast to Roesky's catalyst, Cp2Zr(Me)O(Me)Al(DIPP-nacnac) {DIPP-nacnac = CH[(CMe)(2,6-iPr(2)C(6)H(3)N)](2)}, it contains no Al-Me functionality and has increased Lewis acidity at Al. Crystal structures and the NMR spectra of the aluminum complex (DIPH)AlMe and the bimetallic Al/Zr species reveal in both cases dimeric complexes. The crystal structure of [Cp*Zr-2(Me)OAl(DIPH)](2) shows a planar Al2O2 core and a terminal Cp*Zr-2(Me)O group. Ethylene polymerization in toluene was studied for the bimetallic complex with a variety of scavengers. Under comparable polymerization conditions, the methylalumoxane-activated species show high activities that are similar to those obtained with Cp*2ZrCl2 and Roesky's bimetallic complex Cp2Zr(Me)OAl(Me)(DIPP-nacnac), with a relatively narrow polydispersity index (2.47).



FAU Authors / FAU Editors

Boulho, Cedric Dr.
Lehrstuhl für Anorganische und Metallorganische Chemie
Harder, Sjoerd Prof. Dr.
Lehrstuhl für Anorganische und Metallorganische Chemie
Zijlstra, Harmen
Lehrstuhl für Anorganische und Metallorganische Chemie


How to cite

APA:
Boulho, C., Zijlstra, H., & Harder, S. (2015). Oxide-Bridged Heterobimetallic Aluminum/Zirconium Catalysts for Ethylene Polymerization. European Journal of Inorganic Chemistry, 12, 2132-2138. https://dx.doi.org/10.1002/ejic.201500123

MLA:
Boulho, Cedric, Harmen Zijlstra, and Sjoerd Harder. "Oxide-Bridged Heterobimetallic Aluminum/Zirconium Catalysts for Ethylene Polymerization." European Journal of Inorganic Chemistry 12 (2015): 2132-2138.

BibTeX: 

Last updated on 2018-10-08 at 05:27