Research output: Contribution to journal › Article › peer-review
The nature of nickel species formed upon the activation of α-diimine nickel(II) pre-catalyst with alkylaluminum sesquichlorides. / Soshnikov, Igor E.; Semikolenova, Nina V.; Bryliakov, Konstantin P. et al.
In: Journal of Organometallic Chemistry, Vol. 907, 121063, 01.02.2020.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - The nature of nickel species formed upon the activation of α-diimine nickel(II) pre-catalyst with alkylaluminum sesquichlorides
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: © 2019 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/2/1
Y1 - 2020/2/1
N2 - 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.
AB - 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.
KW - EPR
KW - Ethylene intermediates
KW - Nickel
KW - NMR
KW - Polymerization
KW - THERMAL-STABILITY
KW - SUBSTITUENTS
KW - CHAIN-WALKING POLYMERIZATION
KW - ETHYLENE POLYMERIZATION BEHAVIOR
KW - POLYETHYLENE
KW - ELASTOMERS
KW - COMPLEXES SYNTHESIS
KW - OLEFINS
KW - BROMIDE
UR - http://www.scopus.com/inward/record.url?scp=85076288458&partnerID=8YFLogxK
U2 - 10.1016/j.jorganchem.2019.121063
DO - 10.1016/j.jorganchem.2019.121063
M3 - Article
AN - SCOPUS:85076288458
VL - 907
JO - Journal of Organometallic Chemistry
JF - Journal of Organometallic Chemistry
SN - 0022-328X
M1 - 121063
ER -
ID: 22646309