Formation and Structures of Cationic Zirconium Complexes in Ternary Systems rac - (SBI) ZrX2 / AlBu3i / [CPh3] [B(C6F5)4] (X = Cl, Me) | Sciact - CRIS-system of Boreskov Institute of Catalysis

Formation and Structures of Cationic Zirconium Complexes in Ternary Systems rac - (SBI) ZrX2 / AlBu3i / [CPh3] [B(C6F5)4] (X = Cl, Me) Full article

Journal

Journal of Organometallic Chemistry
ISSN: 0022-328X

Output data

Year: 2007, Volume: 692, Number: 4, Pages: 859-868 Pages count : 10 DOI: 10.1016/j.jorganchem.2006.10.037

Tags

Activation, Catalysis, Intermediate, Metallocenes, NMR, Triisobutyl aluminum

Authors

Bryliakov Konstantin P. ^1,2 , Talsi Evgenii P. ^1,2 , Semikolenova Nina V. ² , Zakharov Vladimir A. ² , Brand Jörg ³ , Alonso-Moreno Carlos ⁴ , Bochmann Manfred ⁴

Affiliations

1	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation
2	Department of Natural Sciences, Novosibirsk State University, 630090 Novosibirsk, Russian Federation
3	Fachbereich Chemie, University of Konstanz, D-78457 Konstanz, Germany
4	Wolfson Materials and Catalysis Centre, School of Chemical Sciences and Pharmacy, University of East Anglia, Norwich NR4 7TJ, United Kingdom

Funding (2)

1	International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union	00-841
2	Royal Society	2004/R1-FSU

Using 13C, 1H and 19F NMR spectroscopy, formation of cationic species was studied in ternary systems (SBI)ZrX2/View the MathML source/[CPh3][B(C6F5)4], where X = Cl, Me [(SBI) = rac-Me2Si(Ind)2]. In the first system (X = Cl), the ion pair [(SBI)Zr(μ-Cl)2Zr(SBI)][B(C6F5)4]2 (IV) predominates at low Al/Zr ratios (Al/Zr < 10), whereas at higher Al/Zr ratios (⩾20) in the absence of monomer mainly [(SBI)Zr(μ-H)(μ-C4H7)View the MathML source] [B(C6F5)4] (V) is formed. The binuclear complex [(SBI)Zr(μ-Cl)2Zr(SBI)][B(C6F5)4]2 has been characterized crystallographically. Species V is also formed in the system X = Me at high Al/Zr ratios. In the presence of View the MathML source, IV displays activity in propylene polymerization and is the most likely precursor of the polymerizing species. Consistent mechanisms have been proposed for the reactions in these catalytic systems.

Bryliakov K.P. , Talsi E.P. , Semikolenova N.V. , Zakharov V.A. , Brand J. , Alonso-Moreno C. , Bochmann M.
Formation and Structures of Cationic Zirconium Complexes in Ternary Systems rac - (SBI) ZrX2 / AlBu3i / [CPh3] [B(C6F5)4] (X = Cl, Me)

Journal of Organometallic Chemistry. 2007. V.692. N4. P.859-868. DOI: 10.1016/j.jorganchem.2006.10.037 WOS Scopus РИНЦ ANCAN OpenAlex

Full text from publisher

Submitted:	Sep 12, 2006
Accepted:	Oct 16, 2006
Published online:	Oct 25, 2006
Published print:	Jan 15, 2007

Web of science:	WOS:000243814700020
Scopus:	2-s2.0-33845913237
Elibrary:	13556329
Chemical Abstracts:	2007:55676
Chemical Abstracts (print):	146:316997
OpenAlex:	W2012938774

DB	Citing
Web of science	32
Scopus	36
Elibrary	34
OpenAlex	41