Iron complexes bearing 2-imino-1,10-phenanthrolinyl ligands as highly active catalysts for ethylene oligomerization
Iron complexes bearing 2-imino-1,10-phenanthrolinyl ligands as highly active catalysts for ethylene oligomerization
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DOI：
10.1021/om050891p
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发表时间：
2006
期刊：
影响因子：
2.8
通讯作者：
Wen‐Hua Sun;S. Jie;Shu Zhang;W. Zhang;and Yingxia Song;Hongwei Ma;J. Chen;Katrin Wedeking and
中科院分区：
文献类型：
--
作者：
Wen‐Hua Sun;S. Jie;Shu Zhang;W. Zhang;and Yingxia Song;Hongwei Ma;J. Chen;Katrin Wedeking and
合成了一系列由2-亚氨基-1，10-菲咯啉配体LFeCl_2（L = 2-（ArNCR）-1，10-phen）配位的铁配合物，并通过元素分析、光谱分析沿着X射线衍射对其进行了表征。以甲基铝氧烷（MAO）或改性甲基铝氧烷（MMAO）为活化剂，这些铁（II）配合物对乙烯齐聚反应的催化活性高达8.95 × 107 gmol-1（Fe）h-1。生成的低聚物的分布遵循Schluz-Flory规则，对α-烯烃具有高选择性。配体的空间效应和电子效应影响催化活性和产物的性质。并对反应条件进行了优化，探讨了配合物的催化性能。
A series of iron complexes ligated by 2-imino-1,10-phenanthrolinyl ligands, LFeCl2 (L = 2-(ArNCR)-1,10-phen), were synthesized and sufficiently characterized by elemental and spectroscopic analysis along with X-ray diffraction analysis. Activated with methylaluminoxane (MAO) or modified methylaluminoxane (MMAO), these iron(II) complexes show high catalytic activities up to 8.95 × 107 g mol-1(Fe) h-1 for ethylene oligomerization. The distribution of oligomers produced follows Schluz−Flory rules with high selectivity for α-olefins. Both the steric and electronic effects of coordinative ligands affect the catalytic activity and the properties of the catalytic products. The parameters of the reaction conditions were also investigated to explore the catalytic potentials of these complexes.