- 2-Ethyl-ketimino-1,10-phenanthroline iron(II) complexes as highly active catalysts for ethylene oligomerization
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A series of 2-(1-aryliminopropyl)-1,10-phenanthrolines (L1-L7) and their corresponding iron(II) chlorides (Fe1-Fe7) are synthesized and characterized by elemental and spectroscopic analyses. The molecular structures of 2-[1-(2,6-diisopropy1phenylimino)propyl]-1,10-phenanthroline (L3) and {2-[1-(2,6-diethylphenylimino)propyl]-1,10-phenanthroline}·FeCl2 (Fe2) are determined by the single crystal X-ray diffraction. All iron complexes, activated with methylaluminoxane (MAO), exhibit high activities in ethylene oligomerization with high selectivity for α-olefins produced. Compared with other 2-imino-phenanthrolines, the title complexes show better thermal stability, and their oligomerization products are potentially more useful due to lower contents of butenes and waxes observed.
- Zhang, Min,Zhang, Wenjuan,Xiao, Tianpengfei,Xiang, Jun-Feng,Hao, Xiang,Sun, Wen-Hua
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scheme or table
p. 92 - 96
(2010/06/21)
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