Synthesis and structures of cycloalkylidene-bridged cyclopentadienyl metallocene catalysts: Effects of the bridges of ansa-metallocene complexes on the catalytic activity for ethylene polymerization
文献类型：期刊论文
| 作者 | Wang, BQ; Mu, B; Deng, XB; Cui, HL; Xu, SS; Zhou, XZ; Zou, FL; Li, Y; Yang, L; Li, YF |
| 刊名 | CHEMISTRY-A EUROPEAN JOURNAL
 |
| 出版日期 | 2005-01-07 |
| 卷号 | 11期号:2页码:669-679 |
| 关键词 | Bridging Ligands Metallocenes Structure-activity Relationships Titanium Zirconium |
| ISSN号 | 0947-6539 |
| DOI | 10.1002/chem.20040075 |
| 英文摘要 | A series of cycloalkylidene-bridged cyclopentadienyl metallocene complexes, [(CH2)(n)(C5H4)(2)MCl2] (M = Ti, n = 4 (4), 5 (5), 6 (6); M = Zr, n 4 (7), 5 (8), 6 (9); M = Hf, n = 4 (10), 5 (11), 6 (12)), have been synthesized and applied to ethylene polymerization after activation with methyl aluminoxane (MAO). The cycloalkylidene-bridged titanocene catalysts exhibit much higher activities than the corresponding zirconocene and hafnocene analogues, and have the highest activities at higher temperatures. In comparison, the silacyclopentylidenebridged metallocene complexes [(CH2)(4)Si(C5H4)(2)MCl2] (M = Ti (13), Zr (14)) and isopropylene-bridged metallocene complexes [Me2C(C5H4)(2)MCl2] (M = Ti (15), Zr (16)) have also been synthesized and applied to ethylene polymerization. In both cases, the titanocene complexes show much higher activities than the corresponding zirconocene analogues, especially at a lower temperature. The molecular structures of complexes 4-9 have been determined by X-ray diffraction. The structure-activity relationships, especially the effects of the bridges of ansa-metallocene complexes, are discussed. |
| 语种 | 英语 |
| WOS记录号 | WOS:000226333500020 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/57121]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, BQ |
| 作者单位 | 1.Nankai Univ, Dept Chem, State Key Lab Elementoorgan Chem, Tianjin 300071, Peoples R China 2.SINOPEC, Res Inst Beijing Yanshan Petrochem Corp, Beijing 102550, Peoples R China 3.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, BQ,Mu, B,Deng, XB,et al. Synthesis and structures of cycloalkylidene-bridged cyclopentadienyl metallocene catalysts: Effects of the bridges of ansa-metallocene complexes on the catalytic activity for ethylene polymerization[J]. CHEMISTRY-A EUROPEAN JOURNAL,2005,11(2):669-679. |
| APA | Wang, BQ.,Mu, B.,Deng, XB.,Cui, HL.,Xu, SS.,...&Hu, YL.(2005).Synthesis and structures of cycloalkylidene-bridged cyclopentadienyl metallocene catalysts: Effects of the bridges of ansa-metallocene complexes on the catalytic activity for ethylene polymerization.CHEMISTRY-A EUROPEAN JOURNAL,11(2),669-679. |
| MLA | Wang, BQ,et al."Synthesis and structures of cycloalkylidene-bridged cyclopentadienyl metallocene catalysts: Effects of the bridges of ansa-metallocene complexes on the catalytic activity for ethylene polymerization".CHEMISTRY-A EUROPEAN JOURNAL 11.2(2005):669-679. |
入库方式： OAI收割
来源：化学研究所
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