Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization
文献类型：期刊论文
| 作者 | Liu, Zhizhou1; Gao, Wei1; Liu, Xiaoming1; Luo, Xuyang1; Cui, Dongmei2; Mu, Ying1 |
| 刊名 | ORGANOMETALLICS
 |
| 出版日期 | 2011-02-28 |
| 卷号 | 30期号:4页码:749-756 |
| ISSN号 | 0276-7333 |
| DOI | 10.1021/om1009236 |
| 英文摘要 | Reactions of 2,6-(ArN=CH)(2)C6H3Li with CrCl2(THF)(2) afford two trinuclear bis(imino)aryl NCN pincer Cr(II) complexes {[2,6-(ArN=CH)(2)C6H3]Cr(mu-Cl)(2)}(2)Cr [Ar = 2,6-Me2C6H3 (1a), 2,6-Et2C6H3 (1b)], and a mononuclear bis(imino)aryl NCN pincer Cr(II) complex [2,6-(ArN=CH)(2)C6H3]Cr(mu-Cl)(2)Li(THF)(2) [Ar = 2,6-(Pr2C6H3)-Pr-i (1c)], respectively. Similar reactions of 2,6-(ArN=CH)(2)C6H3Li with CrCl3(THF)(3) produce only mononuclear bis(imino)aryl NCN pincer Cr(III) complexes [2,6-(ArN=CH)(2)C6H3]CrCl2(THF) [Ar = 2,6-Me2C6H3 (2a), 2,6-Et2C6H3 (2b), 2,6-(Pr2C6H3)-Pr-i (2c)]. X-ray crystallographic analysis reveals that the terminal Cr(II) atoms in la and lb and the Cr(II) atom in le possess a distorted trigonal bipyramidal coordination environment with the C-ipso atom of the pincer ligand and two chloride atoms in the equator and the two imine nitrogen atoms in the apical positions, while the Cr(III) complexes 2a, 2b, and 2c all adopt a distorted octahedral geometry around the chromium metal. Upon activation with trialkylaluminum and [Ph3C](+)[B(C6F5)(4)](-), the Cr(III) complexes show high catalytic activity for isoprene polymerization and afford polyisoprene with predominately trans-1,4 units, whereas the Cr(I I) complexes are inert under the same conditions. |
| 语种 | 英语 |
| WOS记录号 | WOS:000287546600013 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/73111]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Gao, Wei |
| 作者单位 | 1.Jilin Univ, State Key Lab Supramol Struct & Mat, Sch Chem, Changchun 130012, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Zhizhou,Gao, Wei,Liu, Xiaoming,et al. Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization[J]. ORGANOMETALLICS,2011,30(4):749-756. |
| APA | Liu, Zhizhou,Gao, Wei,Liu, Xiaoming,Luo, Xuyang,Cui, Dongmei,&Mu, Ying.(2011).Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization.ORGANOMETALLICS,30(4),749-756. |
| MLA | Liu, Zhizhou,et al."Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization".ORGANOMETALLICS 30.4(2011):749-756. |
入库方式： OAI收割
来源：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。