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Activation of an α-Diimine Ni(II) Precatalyst with AlMe3and AliBu3 : Catalytic and NMR and EPR Spectroscopy Studies. / Soshnikov, Igor E.; Semikolenova, Nina V.; Bryliakov, Konstantin P. et al.

In: Organometallics, Vol. 39, No. 16, 24.08.2020, p. 3034-3040.

Research output: Contribution to journal › Article › peer-review

Harvard

Soshnikov, IE, Semikolenova, NV, Bryliakov, KP, Antonov, AA, Sun, WH & Talsi, EP 2020, 'Activation of an α-Diimine Ni(II) Precatalyst with AlMe3and AliBu3: Catalytic and NMR and EPR Spectroscopy Studies', Organometallics, vol. 39, no. 16, pp. 3034-3040. https://doi.org/10.1021/acs.organomet.0c00395

APA

Soshnikov, I. E., Semikolenova, N. V., Bryliakov, K. P., Antonov, A. A., Sun, W. H., & Talsi, E. P. (2020). Activation of an α-Diimine Ni(II) Precatalyst with AlMe3and AliBu3: Catalytic and NMR and EPR Spectroscopy Studies. Organometallics, 39(16), 3034-3040. https://doi.org/10.1021/acs.organomet.0c00395

Vancouver

Soshnikov IE, Semikolenova NV, Bryliakov KP, Antonov AA, Sun WH, Talsi EP. Activation of an α-Diimine Ni(II) Precatalyst with AlMe3and AliBu3: Catalytic and NMR and EPR Spectroscopy Studies. Organometallics. 2020 Aug 24;39(16):3034-3040. doi: 10.1021/acs.organomet.0c00395

Author

Soshnikov, Igor E. ; Semikolenova, Nina V. ; Bryliakov, Konstantin P. et al. / Activation of an α-Diimine Ni(II) Precatalyst with AlMe3and AliBu3 : Catalytic and NMR and EPR Spectroscopy Studies. In: Organometallics. 2020 ; Vol. 39, No. 16. pp. 3034-3040.

BibTeX

@article{1079e4c39d434284a9f46af82c6ba9a1,
title = "Activation of an α-Diimine Ni(II) Precatalyst with AlMe3and AliBu3: Catalytic and NMR and EPR Spectroscopy Studies",
abstract = "The nature of Ni(II) and Ni(I) species formed upon the activation of the N,N-α-diimine Ni(II) precatalyst LNiIIBr2 (1) with AlMe3, MMAO, and AliBu3 has been studied by NMR and EPR spectroscopy (L = 1,4-bis(2,4,6-trimethylphenyl)-2,3-dimethyl-1,4-diazabuta-1,3-diene). It has been shown that the paramagnetic complex 3AlMe3 with the proposed structure [LNiI(μ-Me)2AlMe2] or [(L•-)NiII(μ-Me)2AlMe2] predominates in the reaction solution of 1/AlMe3 at Al/Ni > 10. Upon activation of 1 with MMAO (Al/Ni > 20-30), nickel predominantly exists in the form of the structurally similar complex 3MMAO ([LNiI(μ-Me)2AliBu2] or [(L•-)NiII(μ-Me)2AliBu2]). The reaction of 1 with AliBu3 leads to rapid ligand scrambling, affording the EPR-active complex 4 ([(L•-)AliBu2]). The latter process is accompanied by Ni reduction to the zerovalent state. Possible roles of the observed species in the catalytic systems are discussed.",
keywords = "ETHYLENE POLYMERIZATION BEHAVIOR, NICKEL-COMPLEXES, PALLADIUM, COPOLYMERIZATION",
author = "Soshnikov, {Igor E.} and Semikolenova, {Nina V.} and Bryliakov, {Konstantin P.} and Antonov, {Artem A.} and Sun, {Wen Hua} and Talsi, {Evgenii P.}",
note = "Publisher Copyright: Copyright {\textcopyright} 2020 American Chemical Society. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",
year = "2020",
month = aug,
day = "24",
doi = "10.1021/acs.organomet.0c00395",
language = "English",
volume = "39",
pages = "3034--3040",
journal = "Organometallics",
issn = "0276-7333",
publisher = "American Chemical Society",
number = "16",

}

RIS

TY - JOUR

T1 - Activation of an α-Diimine Ni(II) Precatalyst with AlMe3and AliBu3

T2 - Catalytic and NMR and EPR Spectroscopy Studies

AU - Soshnikov, Igor E.

AU - Semikolenova, Nina V.

AU - Bryliakov, Konstantin P.

AU - Antonov, Artem A.

AU - Sun, Wen Hua

AU - Talsi, Evgenii P.

N1 - Publisher Copyright: Copyright © 2020 American Chemical Society. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/8/24

Y1 - 2020/8/24

N2 - The nature of Ni(II) and Ni(I) species formed upon the activation of the N,N-α-diimine Ni(II) precatalyst LNiIIBr2 (1) with AlMe3, MMAO, and AliBu3 has been studied by NMR and EPR spectroscopy (L = 1,4-bis(2,4,6-trimethylphenyl)-2,3-dimethyl-1,4-diazabuta-1,3-diene). It has been shown that the paramagnetic complex 3AlMe3 with the proposed structure [LNiI(μ-Me)2AlMe2] or [(L•-)NiII(μ-Me)2AlMe2] predominates in the reaction solution of 1/AlMe3 at Al/Ni > 10. Upon activation of 1 with MMAO (Al/Ni > 20-30), nickel predominantly exists in the form of the structurally similar complex 3MMAO ([LNiI(μ-Me)2AliBu2] or [(L•-)NiII(μ-Me)2AliBu2]). The reaction of 1 with AliBu3 leads to rapid ligand scrambling, affording the EPR-active complex 4 ([(L•-)AliBu2]). The latter process is accompanied by Ni reduction to the zerovalent state. Possible roles of the observed species in the catalytic systems are discussed.

AB - The nature of Ni(II) and Ni(I) species formed upon the activation of the N,N-α-diimine Ni(II) precatalyst LNiIIBr2 (1) with AlMe3, MMAO, and AliBu3 has been studied by NMR and EPR spectroscopy (L = 1,4-bis(2,4,6-trimethylphenyl)-2,3-dimethyl-1,4-diazabuta-1,3-diene). It has been shown that the paramagnetic complex 3AlMe3 with the proposed structure [LNiI(μ-Me)2AlMe2] or [(L•-)NiII(μ-Me)2AlMe2] predominates in the reaction solution of 1/AlMe3 at Al/Ni > 10. Upon activation of 1 with MMAO (Al/Ni > 20-30), nickel predominantly exists in the form of the structurally similar complex 3MMAO ([LNiI(μ-Me)2AliBu2] or [(L•-)NiII(μ-Me)2AliBu2]). The reaction of 1 with AliBu3 leads to rapid ligand scrambling, affording the EPR-active complex 4 ([(L•-)AliBu2]). The latter process is accompanied by Ni reduction to the zerovalent state. Possible roles of the observed species in the catalytic systems are discussed.

KW - ETHYLENE POLYMERIZATION BEHAVIOR

KW - NICKEL-COMPLEXES

KW - PALLADIUM

KW - COPOLYMERIZATION

UR - http://www.scopus.com/inward/record.url?scp=85089964084&partnerID=8YFLogxK

U2 - 10.1021/acs.organomet.0c00395

DO - 10.1021/acs.organomet.0c00395

M3 - Article

AN - SCOPUS:85089964084

VL - 39

SP - 3034

EP - 3040

JO - Organometallics

JF - Organometallics

SN - 0276-7333

IS - 16

ER -

ID: 25285659