Nickel (II) complexes bearing 2-ethylcarboxylate-6-iminopyridyl ligands: synthesis, structures and their catalytic behavior for ethylene oligomerization and polymerization
文献类型：期刊论文
| 作者 | Tang, XB; Sun, WH ; Gao, TL; Hou, JX; Chen, RT; Chen, W
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| 刊名 | JOURNAL OF ORGANOMETALLIC CHEMISTRY
 |
| 出版日期 | 2005-03-15 |
| 卷号 | 690期号:6页码:1570-1580 |
| 关键词 | Iminopyridine Ligand Nickel Complexes Ethylene Oligomerization Polymerization |
| ISSN号 | 0022-328X |
| DOI | 10.1016/j.jorganchem.2004.12.027 |
| 英文摘要 | A series of nickel (II) complexes (L)NiCl(2) (7-9) and (L)NiBr(2) (10-12) were prepared by the reactions of the corresponding 2-carboxylate-6-iminopyridine ligands 1-6 with NiCl(2) center dot 6H(2)O or (DME)NiBr(2) (DME = 1,2-dimethoxyethane), respectively. All the complexes were characterized by IR spectroscopy and elemental analysis. Solid-state structures of 7, 8, 10, 11 and 12 were determined by X-ray diffraction. In the cases of 7, 8 and 10, the ligands chelate with the nickel centers in tridentate fashion in which the carbonyl oxygen atoms coordinate with the metal centers, while the carbonyl oxygen atoms are free from coordinating with the nickel centers in 11 and 12. Upon activation with methylaluminoxane (MAO), these complexes are active for ethylene oligomerization (up to 7.97 x 10(5) g mol(-1) (Ni) h(-1) for 11 with 2 equivalents of PPh(3) as auxiliary ligand) and/or polymerization (1.37 x 10(4) g mol(-1) (Ni) h(-1) for 9). The ethylene oligomerization activities of 7-12 were significantly improved in the presence of PPh3 as auxiliary ligands. The effects of the coordination environment and reaction conditions on the ethylene catalytic behaviors have been discussed. (c) 2005 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000227818600018 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/56575]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Sun, WH |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fujian 350002, Peoples R China 3.China Petr & Chem Corp, Beijing Res Inst Chem Ind, Natl Polyolefin Engn & Res Ctr, Beijing 100013, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, XB,Sun, WH,Gao, TL,et al. Nickel (II) complexes bearing 2-ethylcarboxylate-6-iminopyridyl ligands: synthesis, structures and their catalytic behavior for ethylene oligomerization and polymerization[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY,2005,690(6):1570-1580. |
| APA | Tang, XB,Sun, WH,Gao, TL,Hou, JX,Chen, RT,&Chen, W.(2005).Nickel (II) complexes bearing 2-ethylcarboxylate-6-iminopyridyl ligands: synthesis, structures and their catalytic behavior for ethylene oligomerization and polymerization.JOURNAL OF ORGANOMETALLIC CHEMISTRY,690(6),1570-1580. |
| MLA | Tang, XB,et al."Nickel (II) complexes bearing 2-ethylcarboxylate-6-iminopyridyl ligands: synthesis, structures and their catalytic behavior for ethylene oligomerization and polymerization".JOURNAL OF ORGANOMETALLIC CHEMISTRY 690.6(2005):1570-1580. |
入库方式： OAI收割
来源：化学研究所
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