文献类型：期刊文献

中文题名：Synthesis, Characterization and Ethylene Oligomerization Behavior of Neutral Nickel Complexes Bearing N-Fluorinated Phenyl Salicylaldiminato Chelate Ligands

英文题名：Synthesis, Characterization and Ethylene Oligomerization Behavior of Neutral Nickel Complexes Bearing N-Fluorinated Phenyl Salicylaldiminato Chelate Ligands

作者：Song Liping[1,2];Song Shaodi[1];Huang Jiling[1]

机构：[1]E China Univ Sci & Technol, Lab Organometall Chem, Shanghai 200237, Peoples R China;[2]Shanghai Univ, Sch Sci, Dept Chem, Shanghai 200444, Peoples R China

年份：2012

卷号：30

期号：5

起止页码：1119

中文期刊名：Chinese Journal of Chemistry

外文期刊名：CHINESE JOURNAL OF CHEMISTRY

收录：;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000304045600019)】；CSCD:【CSCD2011_2012】；

基金：The authors gratefully acknowledge the financial support subsidized by the National Basic Research Program of China (No. 2005CB623800), the National Natural Science Foundation of China (NNSFC) (No. 21072128).

语种：英文

中文关键词：neutral nickel complex;N-fluorinated phenyl salicylaldiminato ligand;crystal structure;ethylene oligomerization

外文关键词：neutral nickel complex; N-fluorinated phenyl salicylaldiminato ligand; crystal structure; ethylene oligomerization

摘要：A series of neutral nickel complexes featuring N-fluorinated phenyl salicylaldiminato chelate ligands was syn- thesized, and the novel molecular structure of complex C14 was further confirmed by X-ray crystallographic analy- sis. The neutral nickel complexes showed high activity up to 9.96× 10^5 g oligomers/（mol Nioh） and high selectivity of C6 in catalyzing ethylene oligomerization using methylaluminoxane （MAO） as cocatalyst. It was observed that the strong electron-withdrawing effect of the fluorinated salicylaldiminato ligand was able to significantly increase the catalytic activity for oligomerization of ethylene. In addition, the influence of reaction parameters such as A1/Ni molar ratio, reaction temperature, a variety of cocatalyst and ethylene pressure on catalytic activity was investigated.
A series of neutral nickel complexes featuring N-fluorinated phenyl salicylaldiminato chelate ligands was synthesized, and the novel molecular structure of complex C14 was further confirmed by X-ray crystallographic analysis. The neutral nickel complexes showed high activity up to 9.96 x 10(5) g oligomers/(mol Ni center dot h) and high selectivity of C6 in catalyzing ethylene oligomerization using methylaluminoxane (MAO) as cocatalyst. It was observed that the strong electron-withdrawing effect of the fluorinated salicylaldiminato ligand was able to significantly increase the catalytic activity for oligomerization of ethylene. In addition, the influence of reaction parameters such as Al/Ni molar ratio, reaction temperature, a variety of cocatalyst and ethylene pressure on catalytic activity was investigated.