The Nature of Nickel Species Formed upon the Activation of α-Diimine Nickel(II) pre-Catalyst with Alkylaluminum Sesquichlorides | Sciact - CRIS-system of Boreskov Institute of Catalysis

The Nature of Nickel Species Formed upon the Activation of α-Diimine Nickel(II) pre-Catalyst with Alkylaluminum Sesquichlorides Full article

Journal

Journal of Organometallic Chemistry
ISSN: 0022-328X

Output data

Year: 2020, Volume: 907, Article number : 121063, Pages count : 6 DOI: 10.1016/j.jorganchem.2019.121063

Tags

EPR; Ethylene intermediates; Nickel; NMR; Polymerization

Authors

Soshnikov Igor E. ^1,2 , Semikolenova Nina V. ¹ , Bryliakov Konstantin P. ^1,2 , Antonov Artem A. ^1,2 , Sun Wen-Hua ³ , Talsi Evgenii P. ^1,2

Affiliations

1	Boreskov Institute of Catalysis, Pr. Lavrentieva, 5, Novosibirsk, 630090, Russian Federation
2	Novosibirsk State University, Pirogova 1, Novosibirsk, 630090, Russian Federation
3	State Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China

Funding (2)

1	Federal Agency for Scientific Organizations	0303-2016-0009
2	Russian Foundation for Basic Research National Natural Science Foundation of China	18-53-80031 / 51861145303

The nature of nickel(II) species, formed upon the activation of α-diiminonickel pre-catalyst LNNiIIBr2 (LN = 1,2-Bis[(2,4,6-trimethylphenyl)imino]acenaphthene) with Al2Et3Cl3 and Al2Me3Cl3, has been studied using 1H and 2H NMR spectroscopy. The paramagnetic heterobinuclear ion pairs of the type [LNNiII(μ-Cl)2AlRCl]+[A]– (where R = Et or Me, [A]- = counter anion) have been observed in the catalyst systems LNNiIIBr2/Al2Et3Cl3 and LNNiIIBr2/Al2Me3Cl3. At room temperature, both ion pairs gradually transform into EPR-active complexes of Ni(I). Their possible role in ethylene polymerization is discussed. © 2019 Elsevier B.V.

Soshnikov I.E. , Semikolenova N.V. , Bryliakov K.P. , Antonov A.A. , Sun W-H. , Talsi E.P.
The Nature of Nickel Species Formed upon the Activation of α-Diimine Nickel(II) pre-Catalyst with Alkylaluminum Sesquichlorides
Journal of Organometallic Chemistry. 2020. V.907. 121063 :1-6. DOI: 10.1016/j.jorganchem.2019.121063 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Oct 21, 2019
Accepted:	Dec 3, 2019
Published online:	Dec 6, 2019
Published print:	Feb 1, 2020

Web of science:	WOS:000506406600013
Scopus:	2-s2.0-85076288458
Elibrary:	43220225
Chemical Abstracts:	2019:2438909
OpenAlex:	W2994148722

DB	Citing
Scopus	11
Web of science	11
Elibrary	9
OpenAlex	11