New neutral nickel(II) complexes bearing pyrrole-imine chelate ligands: synthesis, structure and norbornene polymerization behavior
文献类型：期刊论文
| 作者 | Li YS ; Li YR ; Li XF |
| 刊名 | journal of organometallic chemistry
 |
| 出版日期 | 2003 |
| 卷号 | 667期号:1-2页码:185-191 |
| 关键词 | VINYLIC POLYMERIZATION ALUMINOXANE CATALYSTS COPOLYMERIZATION ETHYLENE ETHENE BICYCLO<2.2.1>HEPT-2-ENE HOMOPOLYMERIZATION POLYNORBORNENE POLYMERS |
| ISSN号 | 0022-328x |
| 通讯作者 | li ys |
| 中文摘要 | new neutral nickel(ii) complexes bearing nonsymmetric bidentate pyrrole-imine chelate ligands (4a-d), [2-(arnch)c4h3n]ni(pph3)ph [ar=2,6-diisopropylphenyl (a), 2-methyl-6-isopropylphenyl (b), 2,6-diethylphenyl (c), 2-tert-butylphenyl (d)], have been prepared in good yields from the sodium salts of the corresponding ligands and trans-ni(pph3)(2)(ph)cl, and the structure of complex 4a has been confirmed by x-ray crystallographic analysis. these neutral ni(ii) complexes were investigated as catalysts for the vinylic polymerization of norbornene. using modified methylaluminoxane (mmao) as a cocatalyst, these complexes display very high activities and produce great mass polymers. catalyst activity of up to 4.2 x 10(7) g (mol ni h)(-1) and the viscosity-average molecular weight of polymer of up to 9.2 x 10(5) g mol(-1) were observed. catalyst activity, polymer yield, and polymer molecular weight can be controlled over a wide range by the variation of reaction parameters such as al-ni ratio, norbornene-catalyst ratio, monomer concentration, polymerization reaction temperature and time. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000181147000025 |
| 公开日期 | 2010-09-13 |
| 源URL | [http://202.98.16.49/handle/322003/17183]  |
| 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 YS,Li YR,Li XF. New neutral nickel(II) complexes bearing pyrrole-imine chelate ligands: synthesis, structure and norbornene polymerization behavior[J]. journal of organometallic chemistry,2003,667(1-2):185-191. |
| APA | Li YS,Li YR,&Li XF.(2003).New neutral nickel(II) complexes bearing pyrrole-imine chelate ligands: synthesis, structure and norbornene polymerization behavior.journal of organometallic chemistry,667(1-2),185-191. |
| MLA | Li YS,et al."New neutral nickel(II) complexes bearing pyrrole-imine chelate ligands: synthesis, structure and norbornene polymerization behavior".journal of organometallic chemistry 667.1-2(2003):185-191. |
入库方式： OAI收割
来源：长春应用化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。