Dialkyl Rare Earth Complexes Supported by Potentially Tridentate Amidinate Ligands: Synthesis, Structures, and Catalytic Activity in Isoprene Polymerization
文献类型：期刊论文
| 作者 | Rad'kov VY ; Skvortsov GG ; Lyubov DM ; Cherkasov AV ; Fukin GK ; Shavyrin AS ; Cui DM ; Trifonov AA |
| 刊名 | european journal of inorganic chemistry
 |
| 出版日期 | 2012 |
| 期号 | 13页码:2289-2297 |
| 关键词 | MONOANIONIC ANCILLARY LIGANDS YTTRIUM ALKYL COMPLEXES COORDINATION CHEMISTRY OLEFIN POLYMERIZATION ORGANOYTTRIUM CHEMISTRY ETHENE POLYMERIZATION GUANIDINATE LIGANDS MOLECULAR-STRUCTURE METAL-CATALYSTS REACTIVITY |
| ISSN号 | 1434-1948 |
| 通讯作者 | trifonov aa |
| 中文摘要 | two new amidines that contain a pendant lewis base in the side arm, 2-meoc6h4nc(tbu)nh(2,6-r2c6h3) (r = me, ipr), were synthesized and successfully employed as tridentate ligands for the preparation of the dialkyl rare earth complexes [2-meoc6h4nc(tbu)n(2,6-r2c6h3)]ln(ch2sime3)2(l)n {ln = y, lu; r = me, ipr; l = thf (n = 2), dme (n = 1)}. these ligands provided enhanced stability for the complexes. the x-ray structure determinations revealed that intramolecular coordination of the 2-meoc6h4 group is realized if a thf molecule is coordinated to the metal center (ln = y, lu), which results in the coordination number of six. the treatment of complex [2-meoc6h4nc(tbu)n(2,6-me2c6h3)]lu(ch2sime3)2(thf) with dme afforded a six-coordinate dme adduct in which the methoxy group of the amidinate ligand has drifted out from the metal coordination sphere. the reaction of [2-meoc6h4nc(tbu)n(2,6-ipr2c6h3)]y(ch2sime3)2(thf) with 2,6-diisopropylaniline in hexane at 70 degrees c, regardless of the ratio of the reagent, afforded the six-coordinate diamido compound [2-meoc6h4nc(tbu)n(2,6-ipr2c6h3)]y(nhc6h3-2,6-ipr2)2(thf), for which intramolecular coordination of the oxygen atom of the side chain was detected by an x-ray study. complex [2-meoc6h4nc(tbu)n(2,6-ipr2c6h3)]y(ch2sime3)2(thf) was evaluated as a precatalyst for isoprene polymerization. the ternary system [2-meoc6h4nc(tbu)n(2,6-ipr2c6h3)]y(ch2sime3)2(thf)/[ph3c][b(c6f5)4]/alibu3provided isoprene polymerization with moderate activity but without control of the regioselectivity (3,4-regularity was slightly predominant at 52?%). nevertheless, high 1,4-trans-selectivity was found (96%) for the 1,4-polyisoprenes. the obtained polyisoprene has a mn of 13.0 x 10(4) and moderate polydispersity (2.12). |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000303155200013 |
| 公开日期 | 2013-05-22 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/48193]  |
| 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 | Rad'kov VY,Skvortsov GG,Lyubov DM,et al. Dialkyl Rare Earth Complexes Supported by Potentially Tridentate Amidinate Ligands: Synthesis, Structures, and Catalytic Activity in Isoprene Polymerization[J]. european journal of inorganic chemistry,2012(13):2289-2297. |
| APA | Rad'kov VY.,Skvortsov GG.,Lyubov DM.,Cherkasov AV.,Fukin GK.,...&Trifonov AA.(2012).Dialkyl Rare Earth Complexes Supported by Potentially Tridentate Amidinate Ligands: Synthesis, Structures, and Catalytic Activity in Isoprene Polymerization.european journal of inorganic chemistry(13),2289-2297. |
| MLA | Rad'kov VY,et al."Dialkyl Rare Earth Complexes Supported by Potentially Tridentate Amidinate Ligands: Synthesis, Structures, and Catalytic Activity in Isoprene Polymerization".european journal of inorganic chemistry .13(2012):2289-2297. |
入库方式： OAI收割
来源：长春应用化学研究所
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