| Synthesis, structure, and catalytic ethylene oligomerization of nickel complexes bearing 2-pyrazolyl substituted 1,10-phenanthroline ligands | |
| Department | 羰基合成与选择氧化国家重点实验室 ; 精细石油化工中间体国家工程研究中心 |
Yang Y(杨月); Yang PJ(杨培菊) ; Zhang C(张翠); Li G(李刚); Yang XJ(杨晓娟); Wu B(吴彪); Christoph Janiak
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| 2008 | |
| Source Publication | Journal of Molecular Catalysis A: Chemical
 |
| ISSN | 1381-1169 |
| Volume | 296Pages:9-17 |
| Abstract | A series of nickel(II) halidecomplexes [NiCl2(L)] (1a–12a) and [NiBr2(L)] (1b–12b) bearing 2-pyrazolyl substituted 1,10-phenanthroline derivatives (L1–L12) have been synthesized and characterized by elemental analysis, IR spectroscopy and X-ray diffraction analysis (for 1a , 10b and 12b).Upon activation withmethylaluminoxane (MAO), these complexes display good catalytic activities in ethylene oligomerization (up to 3.01×105 g mol(Ni)−1 h−1 at 10 atm of ethylene for 12a with L12 = 2-(3,5-diphenylpyrazol-1-yl)-9-mesityl-1,10-phenanthroline). Complexes with bulkier aryl groups in the 9-position of the phenanthroline ring and the 3- and 5-position of the pyrazolyl ring give higher activities. This is explained with the formation of a more directional environment, a reaction channel around the nickel center which enhances the probability of insertion over dissociation after ethylene coordination to Ni. Also, bulkier aryl substituents can suppress chain-transfer reactions (typically -H elimination) and therefore increase the activity. |
| Keyword | Nickel Complexes Ethylene Oligomerization Phenanthroline Ligand Nitrogen Ligands Methylalumoxane |
| Subject Area | 金属有机与超分子催化 |
| Funding Organization | the “Bairen Jihua” project of the Chinese Academy of Sciences;the University of Freiburg |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 金属有机与超分子催化研究组 ; 金属有机功能材料研究组 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/1945 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） 精细石油化工中间体国家工程研究中心（ERC） |
| Corresponding Author | Wu B(吴彪); Christoph Janiak |
| Recommended Citation GB/T 7714 | Yang Y,Yang PJ,Zhang C,et al. Synthesis, structure, and catalytic ethylene oligomerization of nickel complexes bearing 2-pyrazolyl substituted 1,10-phenanthroline ligands[J]. Journal of Molecular Catalysis A: Chemical,2008,296:9-17. |
| APA | 杨月.,杨培菊.,张翠.,李刚.,杨晓娟.,...&Christoph Janiak.(2008).Synthesis, structure, and catalytic ethylene oligomerization of nickel complexes bearing 2-pyrazolyl substituted 1,10-phenanthroline ligands.Journal of Molecular Catalysis A: Chemical,296,9-17. |
| MLA | 杨月,et al."Synthesis, structure, and catalytic ethylene oligomerization of nickel complexes bearing 2-pyrazolyl substituted 1,10-phenanthroline ligands".Journal of Molecular Catalysis A: Chemical 296(2008):9-17. |
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