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 |
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| 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 |
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| Affiliations |
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Funding (2)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0004 |
| 2 |
Russian Foundation for Basic Research National Natural Science Foundation of China |
18-53-80031 / 51861145303 |
Abstract:
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.
Cite:
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 OpenAlex AN
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 OpenAlex AN
Dates:
| Submitted: | Jan 11, 2021 |
| Published online: | Mar 22, 2021 |
| Published print: | Apr 12, 2021 |
Identifiers:
| ≡ Web of science: | WOS:000640312300011 |
| ≡ Scopus: | 2-s2.0-85104954179 |
| ≡ Elibrary: | 46029077 |
| ≡ OpenAlex: | W3137700134 |
| ≡ Chemical Abstracts: | 2021:677618 |