Yttrium bis(alkyl) and bis(amido) complexes bearing N,O multidentate ligands. Synthesis and catalytic activity towards ring-opening polymerization of L-lactide
文献类型：期刊论文
| 作者 | Shang XM ; Liu XL ; Cui DM |
| 刊名 | journal of polymer science part a-polymer chemistry
 |
| 出版日期 | 2007 |
| 卷号 | 45期号:23页码:5662-5672 |
| ISSN号 | 0887-624x |
| 关键词 | BETA-DIKETIMINATO LIGANDS EARTH-METAL COMPLEXES C5ME5/ER-LIGATED SAMARIUM(II) COMPLEXES MONOANIONIC ANCILLARY LIGANDS ALKYL COMPLEXES RACEMIC LACTIDE RAC-LACTIDE STEREOSELECTIVE POLYMERIZATION COORDINATION CHEMISTRY BLOCK-COPOLYMERIZATION |
| 通讯作者 | cui dm |
| 中文摘要 | methoxy-modified beta-diimines hl1 and hl2 reacted with y(ch2sime3)(3)(thf)(2) to afford the corresponding bis(alkyl)s [(ly)-y-1(ch2sime3)(2)] (1) and [(ly)-y-2(ch2sime3)(2)] (2), respectively. amination of 1 with 2,6-diisopropyl aniline gave the bis(amido) counterpart [(ly)-y-1{n(h)(2,6-ipr(2)-c6h3)}(2)] (3), selectively. treatment of y(ch2sime3)(3)(thf)(2) with methoxy-modified anilido imine hl3 yielded bis(alkyl) complex [(ly)-y-3(ch2sime3)(2)(thf)] (4) that sequentially reacted with 2,6-diisopropyl aniline to give the bis(amido) analogue [(ly)-y-3{n(h)(2,6-ipr(2)-c6h3)}(2)] (5). complex 2 was "base-free" monomer, in which the tetradentate beta-diiminato ligand was meridional with the two alkyl species locating above and below it, generating tetragonal bipyramidal core about the metal center. complex 3 was asymmetric monomer containing trigonal bipyramidal core with trans-arrangement of the amido ligands. in contrast, the two cis-located alkyl species in complex 4 were endo and exo towards the 0,n,n tridentate anilido-imido moiety. the bis(amido) complex 5 was confirmed to be structural analogue to 4 albeit without thf coordination. all these yttrium complexes are highly active initiators for the ring-opening polymerization of l-la at room temperature. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000251631100029 |
| 公开日期 | 2010-07-13 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/14061]  |
| 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 | Shang XM,Liu XL,Cui DM. Yttrium bis(alkyl) and bis(amido) complexes bearing N,O multidentate ligands. Synthesis and catalytic activity towards ring-opening polymerization of L-lactide[J]. journal of polymer science part a-polymer chemistry,2007,45(23):5662-5672. |
| APA | Shang XM,Liu XL,&Cui DM.(2007).Yttrium bis(alkyl) and bis(amido) complexes bearing N,O multidentate ligands. Synthesis and catalytic activity towards ring-opening polymerization of L-lactide.journal of polymer science part a-polymer chemistry,45(23),5662-5672. |
| MLA | Shang XM,et al."Yttrium bis(alkyl) and bis(amido) complexes bearing N,O multidentate ligands. Synthesis and catalytic activity towards ring-opening polymerization of L-lactide".journal of polymer science part a-polymer chemistry 45.23(2007):5662-5672. |
入库方式： OAI收割
来源：长春应用化学研究所
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