ICCAS OpenIR
Highly Active Neutral Nickel(II) Catalysts for Ethylene Polymerization Bearing Modified,beta-Ketoiminato Ligands
Song, Dong-Po1,2; Ye, Wei-Ping1; Wang, Yong-Xia3; Liu, Jing-Yao3; Li, Yue-Sheng1
2009-10-12
Source PublicationORGANOMETALLICS
ISSN0276-7333
Volume28Issue:19Pages:5697-5704
AbstractA series of novel neutral nickel complexes 4a-e bearing modified beta-ketoiminato ligands [(2,6-(i)Pr(2)C(6)H(3))N=C(R(1))CHC(2 '-R(2)C(6)H(4))O]Ni(Ph)(PPh(3)) (4a, R(1) R(2) = H; 4b, R(1) = H, R(2) = Ph; 4c, R(1) = H, R(2) = Naphth; 4d, R(1) = CH(3), R(2) = Ph; 4e, R(1) = CF(3), R(2) Ph) have been synthesized and characterized. Molecular structures of 4b and 4e were further confirmed by X-ray crystallographic analysis. Activated with B(C(6)F(5))(3), all the complexes are active for the polymerization of ethylene to branched polyethylenes. Ligand structure, i.e., substituents R(1) and R(2), greatly influences not only catalytic activity but also the molecular weight and branch content of the polyethylene produced. The phenyl-substituted complex 4b exhibits the highest activity of lip to 145 kg PE/mol(Ni)center dot h center dot atm under optimized conditions, which is about 10 times more than unsubstituted complex 4a (14.0 kg PE/mol(Ni center dot)h center dot atm). Highly branched polyethylene with 103 branches per 1000 carbon atoms has been prepared using catalyst 4e.
DOI10.1021/om900477k
Indexed BySCI ; IC
Language英语
WOS IDWOS:000270363200014
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:42[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/68362
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 130023, Peoples R China
3.Jilin Univ, State Key Lab Theoret & Computat Chem, Changchun 130023, Peoples R China
Recommended Citation
GB/T 7714
Song, Dong-Po,Ye, Wei-Ping,Wang, Yong-Xia,et al. Highly Active Neutral Nickel(II) Catalysts for Ethylene Polymerization Bearing Modified,beta-Ketoiminato Ligands[J]. ORGANOMETALLICS,2009,28(19):5697-5704.
APA Song, Dong-Po,Ye, Wei-Ping,Wang, Yong-Xia,Liu, Jing-Yao,&Li, Yue-Sheng.(2009).Highly Active Neutral Nickel(II) Catalysts for Ethylene Polymerization Bearing Modified,beta-Ketoiminato Ligands.ORGANOMETALLICS,28(19),5697-5704.
MLA Song, Dong-Po,et al."Highly Active Neutral Nickel(II) Catalysts for Ethylene Polymerization Bearing Modified,beta-Ketoiminato Ligands".ORGANOMETALLICS 28.19(2009):5697-5704.
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