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Highly Active Single-Component Neutral Nickel Ethylene Polymerization Catalysts: The Influence of Electronic Effects and Spectator Ligands
Mu, Hong-Liang1,2; Ye, Wei-Ping1; Song, Dong-Po1,2; Li, Yue-Sheng1
2010-12-13
Source PublicationORGANOMETALLICS
ISSN0276-7333
Volume29Issue:23Pages:6282-6290
AbstractA series of neutral nickel complexes [6-CHN(2,6-(Pr2C6H3)-Pr-i)-2-(2-NO2C6H4)-C6H3O-kappa(2)- N,O]Ni(Ph)(PPh3) (6a), [6-CHN(2,6-(Pr2C6H3)-Pr-i)-2-(C6F5)-C6H3O-kappa(2)-N,O]Ni(R)(L) (R = Ph, L = PPh3 (6b-PPh3); R = Me, L = pyridine (6b-Py); R = CH2Ph, L = PMe3 (6b-(1)Bz); R = eta(3)-CH2Ph (6b-(3)Bz)), and [6-CHN(2,6-(Pr2C6H3)-Pr-i)-2-(2-OCH3C6H4)-C6H3O-kappa(2)-N,O]Ni(Ph)(PPh3) (6c) based on 2-nitrophenyl-, pentafluorophenyl-, and 2-methoxyphenyl-substituted salicylaldimine ligands, respectively, have been synthesized and characterized by H-1 NMR, C-13 NMR, and elemental analysis. The solid structures of 6a, 6b-PPh3, 6b-Py, and 6b-(1)Bz have been further confirmed by X-ray crystallography. By combining the benefits of both electronic and steric factors, all the complexes with electron-withdrawing groups proved to be highly active single-component catalysts for ethylene polymerization, producing polymer with moderate molecular weights. Among these catalysts, 6b-PPh3 exhibited very high productivity of up to 5.87 x 10(6) g PE/mol(Ni) . h under optimal conditions. Compared with 6b-PPh3 and 6b-Py, 6b-(3)Bz requires lower temperature and ethylene pressure to show high productivity. The branching number, M-w, and T-m of the polymer can be readily manipulated by variation of reaction conditions and catalyst structure.
DOI10.1021/om100658j
Indexed BySCI ; IC
Language英语
WOS IDWOS:000284866000018
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70060
Collection中国科学院化学研究所
Corresponding AuthorLi, Yue-Sheng
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Changchun Branch, Grad Sch, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Mu, Hong-Liang,Ye, Wei-Ping,Song, Dong-Po,et al. Highly Active Single-Component Neutral Nickel Ethylene Polymerization Catalysts: The Influence of Electronic Effects and Spectator Ligands[J]. ORGANOMETALLICS,2010,29(23):6282-6290.
APA Mu, Hong-Liang,Ye, Wei-Ping,Song, Dong-Po,&Li, Yue-Sheng.(2010).Highly Active Single-Component Neutral Nickel Ethylene Polymerization Catalysts: The Influence of Electronic Effects and Spectator Ligands.ORGANOMETALLICS,29(23),6282-6290.
MLA Mu, Hong-Liang,et al."Highly Active Single-Component Neutral Nickel Ethylene Polymerization Catalysts: The Influence of Electronic Effects and Spectator Ligands".ORGANOMETALLICS 29.23(2010):6282-6290.
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