Isoprene polymerization with indolide-imine supported rare-earth metal alkyl and amidinate complexes
文献类型：期刊论文
| 作者 | Yang, Yi1,2; Wang, Qiaoyi3; Cui, Dongmei1 |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
 |
| 出版日期 | 2008-08-01 |
| 卷号 | 46期号:15页码:5251-5262 |
| 关键词 | Catalysts Indole Rare-earth Metal Selectivity Synthesis |
| ISSN号 | 0887-624X |
| DOI | 10.1002/pola.22855 |
| 英文摘要 | Reaction of 7-{(N-2,6-R)iminomethyl)}lindole (HL1, R = dimethylphenyl; HL2, R = diisopropylphenyl) and rare-earth metal tris(alkyl)s, Ln(CH2SiMe3)(3)(THF)(2), generated new rare-earth metal bis(alkyl) complexes LLn(CH2SiMe3)(2)(THF) [L = L-1: Ln = Lu. (1a), Sc (1b); L = L-2 : Ln = Lu (3a), Se (3b)] and mono(alkyl) complexes L-2 Lu-2(CH2SiMe3) (4a). Treatment of alkyl complexes 1a and 4a with N,N'-diisopropylcarbodiimide afforded the corresponding amidinates (LLu)-Lu-1{iPr(2)NC(CH2SiMe3) NiPr2}(2) (2a) and L-2 Lu-2{iPr(2)NC(CH2SiMe3)NiPr2} (5a), respectively. These new rare-earth metal alkyls and amidinates except 4a in combination with aluminum alkyls and borate generated efficient homogeneous catalysts for the polymerization of isoprene, providing high cis-1,4 selectivity and high molar mass polyisoprene with narrow molar mass distribution (M-n = 2.65 x 10(5), M-w/M-n = 1.07, cis-1,4 98.2%, -60 degrees C). The environmental hindrance around central metals arising from the bulkiness of the ligands, the Lewis-acidity of rare-earth metal ions, the types of aluminum tris(alkyl)s and borate, and polymerization temperature influenced significantly on both the catalytic activity and the regioselectivity. (c) 2008 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000257915000028 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/64205]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Cui, Dongmei |
| 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, Grad Sch, Beijing 100039, Peoples R China 3.Jilin Univ, Coll Chem, Changchun 130012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Yi,Wang, Qiaoyi,Cui, Dongmei. Isoprene polymerization with indolide-imine supported rare-earth metal alkyl and amidinate complexes[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2008,46(15):5251-5262. |
| APA | Yang, Yi,Wang, Qiaoyi,&Cui, Dongmei.(2008).Isoprene polymerization with indolide-imine supported rare-earth metal alkyl and amidinate complexes.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,46(15),5251-5262. |
| MLA | Yang, Yi,et al."Isoprene polymerization with indolide-imine supported rare-earth metal alkyl and amidinate complexes".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 46.15(2008):5251-5262. |
入库方式： OAI收割
来源：化学研究所
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