Stereoselective Polymerization of Styrene with Cationic Scandium Precursors Bearing Quinolyl Aniline Ligands
文献类型：期刊论文
| 作者 | Liu DT ; Luo YJ ; Gao W ; Cui DM |
| 刊名 | organometallics
 |
| 出版日期 | 2010 |
| 卷号 | 29期号:8页码:1916-1923 |
| 关键词 | RING-OPENING POLYMERIZATION N HALF-SANDWICH COMPLEXES O MULTIDENTATE LIGANDS EARTH-METAL ALKYL SYNDIOTACTIC-SPECIFIC POLYMERIZATION SINGLE-SITE CATALYSTS SYNDIOSPECIFIC POLYMERIZATION LACTIDE POLYMERIZATION STEREOSPECIFIC POLYMERIZATION ISOPRENE POLYMERIZATION |
| ISSN号 | 0276-7333 |
| 通讯作者 | cui dm |
| 中文摘要 | the novel n-r-quinolinyl-8-amino ligands hl1-5 (r = 2,6-me2c6h3 (hl1), 2,4,6-me3c6h2 (hl2), 2,6-et2c6h3 (hl3), 2,6-(pr2c6h3)-pr-i (hl4), c6h5 (hl5)) reacted with sc(ch2sime3)(3)(thf)(2) to afford the well-defined complexes (l1-5)sc(ch2sime3)(2)(thf) (1-5), which were fully characterized by nmr spectral and x-ray diffraction analyses. complexes 1-3 combined with organoborates to establish binary systems that exhibited high activity for the polymerization of styrene, while 4 was less active and 5 was almost inert. the cationic complex [(lsc)-sc-1(ch2sime3)(dme)(2)][b(c6f5)(4)] (6) was successfully isolated by treatment of 1 with [phme2nh][b(c6f5)(4)], and represents probably the structural model of the initiation active species. remarkably, upon addition of aluminum trialkyls to the binary systems, distinguished improvement in catalytic performances was achieved, among which the ternary system 1/5al(i)bu(3)/[ph3c][b(c6f5)(4)] displayed the highest activity (1.56 x 10(6) g mol(-1) h(-1)) and syndioselectivity (r = 0.94) via a chain-end control mechanism governed by the concerted steric effect of the ligand and the aluminum alkyls. this represents the first non-cyclopentadienyl stabilized rare-earth metal based catalyst showing both high activity and specific selectivity for the polymerization of styrene, which might shed new light on designing more efficient precursors and further investigation of the mechanism for this polymerization. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000276692100010 |
| 公开日期 | 2012-06-06 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/43774]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Liu DT,Luo YJ,Gao W,et al. Stereoselective Polymerization of Styrene with Cationic Scandium Precursors Bearing Quinolyl Aniline Ligands[J]. organometallics,2010,29(8):1916-1923. |
| APA | Liu DT,Luo YJ,Gao W,&Cui DM.(2010).Stereoselective Polymerization of Styrene with Cationic Scandium Precursors Bearing Quinolyl Aniline Ligands.organometallics,29(8),1916-1923. |
| MLA | Liu DT,et al."Stereoselective Polymerization of Styrene with Cationic Scandium Precursors Bearing Quinolyl Aniline Ligands".organometallics 29.8(2010):1916-1923. |
入库方式： OAI收割
来源：长春应用化学研究所
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