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NMR spectroscopic identification of Ni(ii) species formed upon activation of (α-diimine)NiBr2 polymerization catalysts with MAO and MMAO. / Soshnikov, Igor E.; Semikolenova, Nina V.; Bryliakov, Konstantin P. et al.

In: Dalton Transactions, Vol. 47, No. 14, 01.01.2018, p. 4968-4974.

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

Harvard

Soshnikov, IE, Semikolenova, NV, Bryliakov, KP, Antonov, AA, Zakharov, VA & Talsi, EP 2018, 'NMR spectroscopic identification of Ni(ii) species formed upon activation of (α-diimine)NiBr2 polymerization catalysts with MAO and MMAO', Dalton Transactions, vol. 47, no. 14, pp. 4968-4974. https://doi.org/10.1039/c8dt00483h

APA

Soshnikov, I. E., Semikolenova, N. V., Bryliakov, K. P., Antonov, A. A., Zakharov, V. A., & Talsi, E. P. (2018). NMR spectroscopic identification of Ni(ii) species formed upon activation of (α-diimine)NiBr2 polymerization catalysts with MAO and MMAO. Dalton Transactions, 47(14), 4968-4974. https://doi.org/10.1039/c8dt00483h

Vancouver

Soshnikov IE, Semikolenova NV, Bryliakov KP, Antonov AA, Zakharov VA, Talsi EP. NMR spectroscopic identification of Ni(ii) species formed upon activation of (α-diimine)NiBr2 polymerization catalysts with MAO and MMAO. Dalton Transactions. 2018 Jan 1;47(14):4968-4974. doi: 10.1039/c8dt00483h

Author

Soshnikov, Igor E. ; Semikolenova, Nina V. ; Bryliakov, Konstantin P. et al. / NMR spectroscopic identification of Ni(ii) species formed upon activation of (α-diimine)NiBr2 polymerization catalysts with MAO and MMAO. In: Dalton Transactions. 2018 ; Vol. 47, No. 14. pp. 4968-4974.

BibTeX

@article{a091c38e5e734016bb779285788a6c6b,
title = "NMR spectroscopic identification of Ni(ii) species formed upon activation of (α-diimine)NiBr2 polymerization catalysts with MAO and MMAO",
abstract = "The nature of Ni(ii) species formed upon the activation of the Brookhart's α-diimine polymerization pre-catalyst LNiBr2 with MAO and MMAO (L = 1,4-bis-2,4,6-dimethylphenyl-2,3-dimethyl-1,4-diazabuta-1,3-diene) has been established using 1H and 13C NMR spectroscopy. The heterobinuclear ion pair [LNiII(μ-Me)2AlMe2]+[MeMAO]- is observed at the initial stage of the reaction of LNiBr2 with MAO at -40 °C, whereas the ion pair [LNiII-tBu]+[MeMMAO]- predominates at the initial stage of the reaction of LNiBr2 with MMAO under the same conditions. At higher temperatures, both ion pairs transform into a Ni(i) species displaying an axially anisotropic EPR spectrum (g= 2.21, g = 2.06, A⊥ = 1.06 mT).",
keywords = "ETHYLENE POLYMERIZATION, ALPHA-OLEFINS, COMPLEXES, COPOLYMERIZATION, POLYETHYLENE, METHYLALUMINOXANE, PROPYLENE",
author = "Soshnikov, {Igor E.} and Semikolenova, {Nina V.} and Bryliakov, {Konstantin P.} and Antonov, {Artem A.} and Zakharov, {Vladimir A.} and Talsi, {Evgenii P.}",
note = "Publisher Copyright: This journal is {\textcopyright} The Royal Society of Chemistry.",
year = "2018",
month = jan,
day = "1",
doi = "10.1039/c8dt00483h",
language = "English",
volume = "47",
pages = "4968--4974",
journal = "Dalton Transactions",
issn = "1477-9226",
publisher = "Royal Society of Chemistry",
number = "14",

}

RIS

TY - JOUR

T1 - NMR spectroscopic identification of Ni(ii) species formed upon activation of (α-diimine)NiBr2 polymerization catalysts with MAO and MMAO

AU - Soshnikov, Igor E.

AU - Semikolenova, Nina V.

AU - Bryliakov, Konstantin P.

AU - Antonov, Artem A.

AU - Zakharov, Vladimir A.

AU - Talsi, Evgenii P.

N1 - Publisher Copyright: This journal is © The Royal Society of Chemistry.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The nature of Ni(ii) species formed upon the activation of the Brookhart's α-diimine polymerization pre-catalyst LNiBr2 with MAO and MMAO (L = 1,4-bis-2,4,6-dimethylphenyl-2,3-dimethyl-1,4-diazabuta-1,3-diene) has been established using 1H and 13C NMR spectroscopy. The heterobinuclear ion pair [LNiII(μ-Me)2AlMe2]+[MeMAO]- is observed at the initial stage of the reaction of LNiBr2 with MAO at -40 °C, whereas the ion pair [LNiII-tBu]+[MeMMAO]- predominates at the initial stage of the reaction of LNiBr2 with MMAO under the same conditions. At higher temperatures, both ion pairs transform into a Ni(i) species displaying an axially anisotropic EPR spectrum (g= 2.21, g = 2.06, A⊥ = 1.06 mT).

AB - The nature of Ni(ii) species formed upon the activation of the Brookhart's α-diimine polymerization pre-catalyst LNiBr2 with MAO and MMAO (L = 1,4-bis-2,4,6-dimethylphenyl-2,3-dimethyl-1,4-diazabuta-1,3-diene) has been established using 1H and 13C NMR spectroscopy. The heterobinuclear ion pair [LNiII(μ-Me)2AlMe2]+[MeMAO]- is observed at the initial stage of the reaction of LNiBr2 with MAO at -40 °C, whereas the ion pair [LNiII-tBu]+[MeMMAO]- predominates at the initial stage of the reaction of LNiBr2 with MMAO under the same conditions. At higher temperatures, both ion pairs transform into a Ni(i) species displaying an axially anisotropic EPR spectrum (g= 2.21, g = 2.06, A⊥ = 1.06 mT).

KW - ETHYLENE POLYMERIZATION

KW - ALPHA-OLEFINS

KW - COMPLEXES

KW - COPOLYMERIZATION

KW - POLYETHYLENE

KW - METHYLALUMINOXANE

KW - PROPYLENE

UR - http://www.scopus.com/inward/record.url?scp=85044922614&partnerID=8YFLogxK

U2 - 10.1039/c8dt00483h

DO - 10.1039/c8dt00483h

M3 - Article

AN - SCOPUS:85044922614

VL - 47

SP - 4968

EP - 4974

JO - Dalton Transactions

JF - Dalton Transactions

SN - 1477-9226

IS - 14

ER -

ID: 12417516