Ligand Steric and Electronic Effects on beta-Ketiminato Neutral Nickel(II) Olefin Polymerization Catalysts
文献类型：期刊论文
| 作者 | Song, Dong-Po1,2; Shi, Xin-Cui1,2; Wang, Yong-Xia1; Yang, Ji-Xing1,2; Li, Yue-Sheng1 |
| 刊名 | ORGANOMETALLICS
 |
| 出版日期 | 2012-02-13 |
| 卷号 | 31期号:3页码:966-975 |
| ISSN号 | 0276-7333 |
| DOI | 10.1021/om2010194 |
| 英文摘要 | A series of novel neutral nickel complexes 3a-g and 4a-d bearing the beta-ketiminato ligands [(2,6-(Pr2C6H3)-Pr-i)N=CHCHC(R)O]Ni(R')(L) (for 3a-g, R' = Me, L = Py, and R = Bu-t (3a), Ph (3b), 1-naphthyl (3c), 9-anthryl (3d), PhNMe2(p) (3e), PhOMe(p) (3f), PhCF3(p) (3g); for 4a-d, R' = Ph, L = PPh3, and Bu-t (4a), Ph (4b), 1-naphthyl (4c), 9-anthryl (4d)) have been synthesized and characterized. The molecular structures of 3b-d,f,g and 4a,c were further confirmed by X-ray crystallographic analysis. These complexes were employed in ethylene polymerization to systematically investigate ligand steric and electronic effects on the catalytic properties, including activity, molecular weight (MW), and branching number of the polyethylene obtained. The complexes bearing more bulky ligands showed higher activities and produced more branched polyethylene. Electron-deficient ligands were found to increase the catalytic activity, decrease the MW, and enhance the branching content of the polyethylene. In addition, phosphine Ni-II-Ph complexes 4a-d proved to be more active than the corresponding pyridine Ni-II-Me complexes 3a-d, probably due to the easier dissociation of PPh3 relative to a pyridine from a nickel center. |
| 语种 | 英语 |
| WOS记录号 | WOS:000300116100028 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/48597]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Yue-Sheng |
| 作者单位 | 1.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 |
| 推荐引用方式 GB/T 7714 | Song, Dong-Po,Shi, Xin-Cui,Wang, Yong-Xia,et al. Ligand Steric and Electronic Effects on beta-Ketiminato Neutral Nickel(II) Olefin Polymerization Catalysts[J]. ORGANOMETALLICS,2012,31(3):966-975. |
| APA | Song, Dong-Po,Shi, Xin-Cui,Wang, Yong-Xia,Yang, Ji-Xing,&Li, Yue-Sheng.(2012).Ligand Steric and Electronic Effects on beta-Ketiminato Neutral Nickel(II) Olefin Polymerization Catalysts.ORGANOMETALLICS,31(3),966-975. |
| MLA | Song, Dong-Po,et al."Ligand Steric and Electronic Effects on beta-Ketiminato Neutral Nickel(II) Olefin Polymerization Catalysts".ORGANOMETALLICS 31.3(2012):966-975. |
入库方式： OAI收割
来源：化学研究所
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