Highly trans-1,4 selective polymerization of 1,3-butadiene initiated by iron(III) bis(imino)pyridyl complexes

	Highly trans-1,4 selective polymerization of 1,3-butadiene initiated by iron(III) bis(imino)pyridyl complexes
	Gong DR ; Jia XY ; Wang BL ; Wang F ; Zhang CY ; Zhang XQ ; Jiang LS ; Dong WM
刊名	inorganica chimica acta
	2011
卷号	373 期号:1 页码:47-53
关键词	ALLYL-INSERTION MECHANISM 1 LINEAR ALPHA-OLEFINS 3-DIENE POLYMERIZATION ETHYLENE OLIGOMERIZATION STEREOSPECIFIC POLYMERIZATION LIVING POLYMERIZATION COBALT(II) COMPLEXES CONJUGATED DIENES CATALYST ACTIVITY IRON COMPLEXES
ISSN号	0020-1693
通讯作者	zhang xq
中文摘要	a series of 2,6-bis(imino) pyridyl iron(iii) complexes of the general formula [2,6-(arn=cme)(2)c(5)h(3)n] fecl(3) (ar = -c(6)h(5), 3a; 2-mec(6)h(4), 3b; 2-etc(6)h(4), 3c; 2-(i)prc(6)h(4), 3d; cyclohexyl, 3e; 4-mec(6)h(4), 3f; 4-(i)prc(6)h(4), 3g; 4-fc(6)h(4), 3h and 4-cf(3)c(6)h(4), 3i), activated by alkylaluminum, mao or mmao, have been investigated in 1,3-butadiene polymerization. iron(iii) complex (3a), with the least steric hindrance around the metal center, gives polymer up to 99% in yield in 4 h (butadiene to iron ratio = 1000), and trans-1,4 selectivity about 94.7% at room temperature in toluene, while those (3b-3d) bearing alkyl substituents at the 2-position of each n-aryl ring exhibit much lower catalytic activity and tunable trans-1,4 selectivity. introduction of an alkyl group at the 4-position (para-position, 3f and 3g) exerts a slightly beneficial effect on the trans-1,4 selectivity, while electronegative groups at the same position (3h and 3i) affect negatively on the activity. the effects of temperature, types of cocatalyst and al/fe molar ratio on the polymerization behavior are investigated. more importantly, a mechanism for forming trans-1,4 structure is also proposed. crown copyright (c) 2011 published by elsevier b. v. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000291244600007
公开日期	2012-06-08
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44471]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Gong DR,Jia XY,Wang BL,et al. Highly trans-1,4 selective polymerization of 1,3-butadiene initiated by iron(III) bis(imino)pyridyl complexes[J]. inorganica chimica acta,2011,373(1):47-53.
APA	Gong DR.,Jia XY.,Wang BL.,Wang F.,Zhang CY.,...&Dong WM.(2011).Highly trans-1,4 selective polymerization of 1,3-butadiene initiated by iron(III) bis(imino)pyridyl complexes.inorganica chimica acta,373(1),47-53.
MLA	Gong DR,et al."Highly trans-1,4 selective polymerization of 1,3-butadiene initiated by iron(III) bis(imino)pyridyl complexes".inorganica chimica acta 373.1(2011):47-53.