beta-Diketiminato Rare-Earth Metal Complexes. Structures, Catalysis, and Active Species for Highly cis-1,4-Selective Polymerization of Isoprene
文献类型：期刊论文
| 作者 | Li DF ; Li SH ; Cui DM ; Zhang XQ |
| 刊名 | organometallics
 |
| 出版日期 | 2010 |
| 卷号 | 29期号:9页码:2186-2193 |
| 关键词 | SEPARATED ION-PAIRS 1 METHYL-METHACRYLATE 3-BUTADIENE POLYMERIZATION MOLECULAR-STRUCTURES BOROHYDRIDE COMPLEXES EPSILON-CAPROLACTONE STEREOSPECIFIC POLYMERIZATION ALTERNATING COPOLYMERIZATION REACTIVE ORGANOLANTHANIDES DIALKYLSCANDIUM COMPLEXES |
| ISSN号 | 0276-7333 |
| 通讯作者 | cui dm |
| 中文摘要 | lithiation of the beta-diketimines (2,6-c6h3r2)nh=c(me)ch=c(me)n(2,6-c6h3r2) (r = me (hl1), et (hl2)) by nbuli was followed by metathesis reaction with lncl(3)(thf)(x) and y(bh4)(3)(thf)(2) to afford the corresponding complexes l(1)lncl(2)(thf)(2) (ln = gd (1), nd (3), dy (4), er (5), y (6)), (lgdcl2)-gd-2(thf)2 (2), and (ly)-y-1(bh4)(2)(thf) (8), respectively. treatment of neutral hl1 with y(ch2sime3)(3)(thf)(2) generated the bis(alkyl) complex 7, (ly)-y-1(ch2sime3)(2)-(thf). upon activation with [phnhme2][b(c6f5)(4)] and alibu(3), complex 6 showed the highest cis1,4 selectivity (99.3%, t-p = 0 degrees c) toward the polymerization of isoprene, while complex 7 had a comparatively low cis-1,4 selectivity, and in contrast, complex 8 was completely inert. the influences of the ortho substituents of the n-aryl rings of the ligands, the types of central metals and cocatalysts, and addition sequence of the catalyst components had been thoroughly investigated. by means of x-ray diffraction and h-1 nmr spectroscopy analyses, the intermediates arising from the stoichiometric reactions among the catalyst components and the probable active species were elucidated, which facilitates further investigation of the mechanism for diene polymerization. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000277212300027 |
| 公开日期 | 2012-06-06 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/43749]  |
| 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 | Li DF,Li SH,Cui DM,et al. beta-Diketiminato Rare-Earth Metal Complexes. Structures, Catalysis, and Active Species for Highly cis-1,4-Selective Polymerization of Isoprene[J]. organometallics,2010,29(9):2186-2193. |
| APA | Li DF,Li SH,Cui DM,&Zhang XQ.(2010).beta-Diketiminato Rare-Earth Metal Complexes. Structures, Catalysis, and Active Species for Highly cis-1,4-Selective Polymerization of Isoprene.organometallics,29(9),2186-2193. |
| MLA | Li DF,et al."beta-Diketiminato Rare-Earth Metal Complexes. Structures, Catalysis, and Active Species for Highly cis-1,4-Selective Polymerization of Isoprene".organometallics 29.9(2010):2186-2193. |
入库方式： OAI收割
来源：长春应用化学研究所
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