Active Intermediates of Ethylene Polymerization over 2,6-bis(imino)pyridyl iron Complex Activated with Aluminum Trialkyls and Methylaluminoxane | Sciact - CRIS-system of Boreskov Institute of Catalysis

Active Intermediates of Ethylene Polymerization over 2,6-bis(imino)pyridyl iron Complex Activated with Aluminum Trialkyls and Methylaluminoxane Full article

Journal

Organometallics
ISSN: 0276-7333 , E-ISSN: 1520-6041

Output data

Year: 2004, Volume: 23, Number: 22, Pages: 5375-5378 Pages count : 4 DOI: 10.1021/om0497184

Tags

Aluminum compounds; Catalysts; Complexation; Iron compounds; Molecular weight; Monomers; Nuclear magnetic resonance spectroscopy; Polymerization; Solvents; Toluene

Authors

Bryliakov Konstantin P. ^1,2 , Semikolenova Nina V. ¹ , Zakharov Vladimir A. ¹ , Talsi Evgenii P. ^1,2

Affiliations

1	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 630090, Pr. Lavrentieva 5, Novosibirsk, Russian Federation
2	Department of Natural Sciences, Novosibirsk State University, 630090, Novosibirsk, ul. Pirogova 2, Russian Federation

Funding (2)

1	Russian Foundation for Basic Research	03-03-33034
2	International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union	00-841

The intermediates of olefin polymerization over homogeneous catalysts based on bis(imino)pyridine iron(II) chloride (LFeCl2, L = 2,6-bis[(1-2,6-dimethylphenylimino)ethyl]pyridine) with different activators (trimethyl-, triisobutyl-, trioctylaluminum and MAO) have been studied by 1H and 2H NMR. In conditions approaching real polymerization, neutral species of the type [LFe(II)Cl(μ-R)2AlR2] or [LFe(II)R(μ-R)2AlR2] dominate in the reaction solution in LFeCl2+AlR3 systems, whereas in LFeCl2/MAO systems, ion pairs [LFe(II)(μ-Me)(μ-Cl)AlMe2]+[Me-MAO]- (at Al/Fe < 200) and [LFe(II)(μ-Me)2AlMe2]+[Me-MAO]- (at Al/Fe > 500) are the predominant species.

Bryliakov K.P. , Semikolenova N.V. , Zakharov V.A. , Talsi E.P.
Active Intermediates of Ethylene Polymerization over 2,6-bis(imino)pyridyl iron Complex Activated with Aluminum Trialkyls and Methylaluminoxane
Organometallics. 2004. V.23. N22. P.5375-5378. DOI: 10.1021/om0497184 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Apr 19, 2004
Published online:	Sep 30, 2004
Published print:	Oct 1, 2004

Web of science:	WOS:000224633400040
Scopus:	2-s2.0-8344238959
Elibrary:	13464896
Chemical Abstracts:	2004:794975
Chemical Abstracts (print):	141:424262
OpenAlex:	W2060591145

DB	Citing
Web of science	86
Scopus	90
Elibrary	90
OpenAlex	88