2-[1-(2,6-Dibenzhydryl-4-chlorophenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridyliron(II) dichlorides: Synthesis, characterization and ethylene polymerization behavior
文献类型：期刊论文
| 作者 | Cao, Xiaoping2; He, Fan1,2; Zhao, Weizhen1; Cai, Zhengguo3; Hao, Xiang1; Shiono, Takeshi3; Redshaw, Carl4; Sun, Wen-Hua1,2
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| 刊名 | POLYMER
 |
| 出版日期 | 2012-04-17 |
| 卷号 | 53期号:9页码:1870-1880 |
| 关键词 | Ethylene Polymerization Linear Polyethylene Iron Pre-catalysts |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2012.02.050 |
| 英文摘要 | A series of 2-[1-(2,6-dibenzhydryl-4-chlorophenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridine ligands (L1-L5) as well as the ligand 2,6-bis[1-(2,6-dibenzhydryl-4-chloro-phenylimino)ethyl]pyridine (L6) were synthesized and reacted with FeCl2 center dot 4H(2)O to afford the iron(II) dichloride complexes [LFeCl2] (Fe1-Fe6). All new compounds were fully characterized by elemental and spectroscopic analysis, and the molecular structures of the complexes Fe1, Fe2 and Fe4 were determined by single-crystal X-ray diffraction, which revealed a pseudo-square-pyramidal geometry at iron. Upon activation with either MAO or MMAO, all iron pre-catalysts exhibited very high activity in ethylene polymerization with good thermal stability. To the best of our knowledge, the current system showed the highest activity amongst iron bis(imino)pyridine pre-catalysts reported to-date. The polymerization parameters were explored to determine the optimum conditions for catalytic activity, which were typically found to be 2500 eq. Al to Fe at 60 degrees C in the presence of MMAO, and 80 degrees C in the presence of MAO. The resultant polyethylene possessed a narrow molecular polydispersity index (PDI) consistent with the formation of single-site active species. (C) 2012 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000303307900010 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/49125]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Sun, Wen-Hua |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China 2.Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China 3.Hiroshima Univ, Dept Appl Chem, Higashihiroshima 7398527, Japan 4.Univ E Anglia, Sch Chem, Norwich NR4 7TJ, Norfolk, England |
| 推荐引用方式 GB/T 7714 | Cao, Xiaoping,He, Fan,Zhao, Weizhen,et al. 2-[1-(2,6-Dibenzhydryl-4-chlorophenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridyliron(II) dichlorides: Synthesis, characterization and ethylene polymerization behavior[J]. POLYMER,2012,53(9):1870-1880. |
| APA | Cao, Xiaoping.,He, Fan.,Zhao, Weizhen.,Cai, Zhengguo.,Hao, Xiang.,...&Sun, Wen-Hua.(2012).2-[1-(2,6-Dibenzhydryl-4-chlorophenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridyliron(II) dichlorides: Synthesis, characterization and ethylene polymerization behavior.POLYMER,53(9),1870-1880. |
| MLA | Cao, Xiaoping,et al."2-[1-(2,6-Dibenzhydryl-4-chlorophenylimino)ethyl]-6-[1-(arylimino)ethyl]pyridyliron(II) dichlorides: Synthesis, characterization and ethylene polymerization behavior".POLYMER 53.9(2012):1870-1880. |
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来源：化学研究所
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