Fluoro-substituted 2,6-bis(imino)pyridyl iron and cobalt complexes: High-Activity ethylene oligomerization catalysts

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	Fluoro-substituted 2,6-bis(imino)pyridyl iron and cobalt complexes: High-Activity ethylene oligomerization catalysts
	Chen YF(陈耀峰) ; Qian ZT(钱长涛) ; Sun J(孙杰)
刊名	Organometallics
	2003
卷号	22 期号:6 页码:1231-1236
ISSN号	0276-7333
其他题名	氟取代2,6二亚胺吡啶铁和钴配合物：高活性乙烯齐聚催化剂
通讯作者	钱长涛
英文摘要	Six five-coordinate difluoro-substituted 2,6-bis(imino)pyridyl iron and cobalt complexes,[{2,6-(2,X-F2C6H3NdCCH3)2C5H3N}MCl2] (X = 6, M ) Fe (1), Co (2); X = 5, M = Fe (3), Co(4)); X = 4, M = Fe (5), Co (6)), were synthesized by reactions of the corresponding bis-(imino)pyridyl ligands with FeCl2a4H2O or CoCl2 in tetrahydrofuran (THF). However, a reaction between 2,6-diacetylpyridinebis(2,6-difluoroanil) and FeCl2a4H2O inCH3CN provided the ion-pair complex [Fe{2,6-(2,6-F2C6H3NdCCH3)2C5H3N}2]2+[FeCl4]2- (7) instead of a fivecoordinate complex. The molecular structures of complexes 3 and 6 were determined by X-ray diffraction. The catalytic activities of complexes 1-7 for ethylene oligomerization were studied using modified methylaluminoxane (MMAO) as cocatalyst. At 60 °C and 10 atm of ethylene pressure, the iron complexes 1, 3, and 5 show very high activities: 4.07 _ 107, 9.33 _ 107, and 11.1 _ 107 g/((mol of cat.) h), respectively. The oligomers formed consist mainly of dimer, trimer, and tetramer, with approximately 90% of the products being in the range of C4-C8. The complexes 1, 3, and 5 also exhibit high selectivity for linear R-olefins: >98% (complex 1) and >93% (complexes 3 and 5). The cobalt complexes 2, 4, and 6 and the ion-pair iron complex 7 are inactive for ethylene oligomerization
学科主题	金属有机化学 ; 有机氟化学
收录类别	SCI
原文出处	http://dx.doi.org/10.1021/om020818o
语种	英语
WOS记录号	WOS:000181507300010
公开日期	2013-01-22
内容类型	期刊论文
源URL	[http://202.127.28.38/handle/331003/15265]
专题	上海有机化学研究所_金属有机化学国家重点实验室
推荐引用方式 GB/T 7714	Chen YF,Qian ZT,Sun J. Fluoro-substituted 2,6-bis(imino)pyridyl iron and cobalt complexes: High-Activity ethylene oligomerization catalysts[J]. Organometallics,2003,22(6):1231-1236.
APA	陈耀峰,钱长涛,&孙杰.(2003).Fluoro-substituted 2,6-bis(imino)pyridyl iron and cobalt complexes: High-Activity ethylene oligomerization catalysts.Organometallics,22(6),1231-1236.
MLA	陈耀峰,et al."Fluoro-substituted 2,6-bis(imino)pyridyl iron and cobalt complexes: High-Activity ethylene oligomerization catalysts".Organometallics 22.6(2003):1231-1236.