[ONNO]-type oxovanadium(V) complexes containing amine pyridine bis(phenolate) ligands: synthesis, characterization and catalytic behavior for ethylene (co)polymerization
文献类型：期刊论文
| 作者 | Wang, Jia-Bao1,2; Lu, Ling-Pan1,2; Liu, Jing-Yu1; Mu, Hong-liang1; Li, Yue-Sheng1,3 |
| 刊名 | JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
 |
| 出版日期 | 2015-03-01 |
| 卷号 | 398页码:289-296 |
| 关键词 | Vanadium catalyst Homogeneous catalysis Ethylene (co)polymerization |
| 英文摘要 | A series of oxoyanadium(V) complexes bearing dianionic [ONNO] chelate ligands 2-[bis(3-R1-5-R2-2 hydroxybenzyl) aminomethyllpyridine (2a: R-1 = tBu, R-2 =H; 2b: R-1 =CF3, R-2 = H; 2c: R-1 =OCH3, R-2=H; 2d: R-1 = R-2 = Bu-t) and 2-[bis(3-R(1)5-R-2-hydroxybenzyl) aminoethyl]pyridine (2e: R-1= R-2 = tBu) have been synthesized by reacting VO(OnPr)(3) with 1.0 equiv. of the ligands in CH2Cl2. All these complexes were characterized by H-1, C-13, V-51 NMR spectra and elemental analysis. X-ray structural analysis for 2d revealed a six-coordinate distorted octahedral geometry around the vanadium center in the solid state. It was observed that these complexes existed as a mixture of two isomers, and the main isomer had the oxo moiety in trans configuration to the tripodal nitrogen atom. In the presence of Et(2)AICI and CCI3COOEt, these complexes displayed high catalytic activities for ethylene polymerization even at elevated reaction temperature, depending on ligand structures. The resultant polymers possessed high molecular weights and unimodal molecular weight distributions, indicative of a single active site nature. In addition, copolymerizations of ethylene and norbornene using precatalysts 2a e were also investigated, and the observed catalytic activity was nearly comparable with that for ethylene homopolymerization. When the concentration of comonomer in the feed amounted to 3.0 mol/L, a NBE incorporation up to 41.5% could be achieved. Other reaction parameters that influenced the polymerization behavior, such as reaction temperature and Al/V (molar ratio), are also examined in detail. (C) 2014 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-11-03 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/28513]  |
| 专题 | 化学研究所_高分子物理与化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Changchun Branch, Changchun 130022, Peoples R China 3.Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jia-Bao,Lu, Ling-Pan,Liu, Jing-Yu,et al. [ONNO]-type oxovanadium(V) complexes containing amine pyridine bis(phenolate) ligands: synthesis, characterization and catalytic behavior for ethylene (co)polymerization[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2015,398:289-296. |
| APA | Wang, Jia-Bao,Lu, Ling-Pan,Liu, Jing-Yu,Mu, Hong-liang,&Li, Yue-Sheng.(2015).[ONNO]-type oxovanadium(V) complexes containing amine pyridine bis(phenolate) ligands: synthesis, characterization and catalytic behavior for ethylene (co)polymerization.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,398,289-296. |
| MLA | Wang, Jia-Bao,et al."[ONNO]-type oxovanadium(V) complexes containing amine pyridine bis(phenolate) ligands: synthesis, characterization and catalytic behavior for ethylene (co)polymerization".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 398(2015):289-296. |
入库方式： OAI收割
来源：化学研究所
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