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EPR spectroscopic study of Ni(I) species in the catalyst system for ethylene polymerization based on alpha-diimine Ni(II) complex activated by MMAO
Soshnikov, IE; Semikolenova, NV; Bryliakov, KP; Antonov, AA; Sun, WH; Talsi, EP
2019-02-01
Source PublicationJOURNAL OF ORGANOMETALLIC CHEMISTRY
ISSN0022-328X
Volume880Pages:267-271
AbstractUsing EPR spectroscopy, nickel(I) species formed in the catalyst system 1/MMAO for ethylene polymerization has been investigated (1 = LNiBr2, L = 1,4-bis-2,4,6-dimethylphenyl-2,3-dimethyl-1,4-diazabuta-1,3-dien). It has been shown that diamagnetic cationic complex [LNiII-Bu-t](+)[MeMMAO](-) (2) persists in system 1/MMAO at low temperatures, but rapidly decays at 25 degrees C to give new EPR active species 3 (major product) and 4 (minor product). Species 3 is a nickel(I) complex with the proposed structure [LNiI(S)](+)[MeMMAO](-) (S = solvent), whereas 4 is L(center dot-)AlMe2 species. Upon the addition of ethylene, complex 3 partially reversibly converts into the adduct [LNiI(C2H4)](+)[MeMMAO](-) (5). After ethylene consumption, species 3 restores its original concentration. (c) 2018 Elsevier B.V. All rights reserved.
KeywordMonovalent nickel Ethylene polymerization EPR Active species N,N-alpha-diimine ligand
MOST Discipline CatalogueChemistry
DOI10.1016/j.jorganchem.2018.11.021
Indexed BySCI
Language英语
WOS SubjectChemistry ; Inorganic & Nuclear ; Chemistry ; Organic
WOS IDWOS:000455224100033
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/41954
Collection工程塑料实验室
Affiliation1.Soshnikov, IE
2.Talsi, EP (reprint author), Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Pr Lavrentieva 5, Novosibirsk 630090, Russia.
Recommended Citation
GB/T 7714
Soshnikov, IE,Semikolenova, NV,Bryliakov, KP,et al. EPR spectroscopic study of Ni(I) species in the catalyst system for ethylene polymerization based on alpha-diimine Ni(II) complex activated by MMAO[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY,2019,880:267-271.
APA Soshnikov, IE,Semikolenova, NV,Bryliakov, KP,Antonov, AA,Sun, WH,&Talsi, EP.(2019).EPR spectroscopic study of Ni(I) species in the catalyst system for ethylene polymerization based on alpha-diimine Ni(II) complex activated by MMAO.JOURNAL OF ORGANOMETALLIC CHEMISTRY,880,267-271.
MLA Soshnikov, IE,et al."EPR spectroscopic study of Ni(I) species in the catalyst system for ethylene polymerization based on alpha-diimine Ni(II) complex activated by MMAO".JOURNAL OF ORGANOMETALLIC CHEMISTRY 880(2019):267-271.
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