Nature of Heterobinuclear Ni(I) Complexes Formed upon the Activation of the α-Diimine Complex LNiIIBr2 with AlMe3 and MMAO | Sciact - CRIS-system of Boreskov Institute of Catalysis

Nature of Heterobinuclear Ni(I) Complexes Formed upon the Activation of the α-Diimine Complex LNiIIBr2 with AlMe3 and MMAO Full article

Journal

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

Output data

Year: 2021, Volume: 40, Number: 7, Pages: 907-914 Pages count : 8 DOI: 10.1021/acs.organomet.1c00015

Tags

Electron paramagnetic resonance spectroscopy, Hydrocarbons, Aromatic compounds, Nuclear magnetic resonance spectroscopy, Resonance structures

Authors

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

Affiliations

1	Boreskov Institute of Catalysis, 630090, Novosibirsk, Pr. Lavrentieva, 5, Russian Federation
2	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	Russian Foundation for Basic Research National Natural Science Foundation of China	18-53-80031 / 51861145303
2	Ministry of Science and Higher Education of the Russian Federation	0239-2021-0004

The nature of Ni(I) species formed upon the activation of the N,N-α-diimine Ni(II) ethylene polymerization precatalyst LNiIIBr2 (1) with AlMe3 and MMAO has been studied in detail by 1H, 2H NMR, and electron paramagnetic resonance (EPR) spectroscopy (L = 1,4-bis(2,6-diisopropylphenyl)-2,3-dimethyl-1,4-diazabuta-1,3-diene). It has been shown that neutral paramagnetic NMR and EPR active heterobinuclear complexes of types LNiI(μ-Me)(μ-Br)AlR2 and LNiI(μ-Me)2AlR2 (R = Me in the case of AlMe3 and R = Me or iBu in the case of MMAO) predominate in toluene solutions of 1/AlMe3 and 1/MMAO at room temperature. The effect of the cocatalyst/catalyst ratio on the relative concentrations of LNiI(μ-Me)(μ-Br)AlR2 and LNiI(μ-Me)2AlR2 has been studied and their role in ethylene polymerization is discussed.

Soshnikov I.E. , Semikolenova N.V. , Bryliakov K.P. , Antonov A.A. , Sun W-H. , Talsi E.P.
Nature of Heterobinuclear Ni(I) Complexes Formed upon the Activation of the α-Diimine Complex LNiIIBr2 with AlMe3 and MMAO
Organometallics. 2021. V.40. N7. P.907-914. DOI: 10.1021/acs.organomet.1c00015 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Jan 11, 2021
Published online:	Mar 22, 2021
Published print:	Apr 12, 2021

Web of science:	WOS:000640312300011
Scopus:	2-s2.0-85104954179
Elibrary:	46029077
Chemical Abstracts:	2021:677618
OpenAlex:	W3137700134

DB	Citing
Scopus	9
Web of science	7
Elibrary	6
OpenAlex	8