Highly active and trans-1,4 specific polymerization of 1,3-butadiene catalyzed by 2-pyrazolyl substituted 1,10-phenanthroline ligated iron (II) complexes

	Highly active and trans-1,4 specific polymerization of 1,3-butadiene catalyzed by 2-pyrazolyl substituted 1,10-phenanthroline ligated iron (II) complexes
	Wang BL ; Bi JF ; Zhang CY ; Dai QQ ; Bai CX ; Zhang XQ ; Hu YM ; Jiang LS
刊名	polymer
	2013
卷号	54 期号:19 页码:5174-5181
关键词	STRUCTURE-REACTIVITY RELATIONSHIPS ALLYL-INSERTION MECHANISM ETHYLENE OLIGOMERIZATION NICKEL-COMPLEXES COBALT COMPLEXES STEREOSPECIFIC POLYMERIZATIONS 2 BUTADIENE POLYMERIZATION DIENE POLYMERIZATION CONJUGATED DIENES 6-BIS(IMINO)PYRIDYL IRON
ISSN号	0032-3861
通讯作者	zhang xq
中文摘要	a new family of iron (ii) complexes (2a-h) bearing tridentate 2-pyrazolyl substituted 1,10-phenanthroline ligands were successfully prepared and characterized by ir spectroscopy, elemental analysis, and mass spectra. complexes 2a-f and 2h were further confirmed by the x-ray crystallographic analysis. 2a, 2b, 2e, and 2f adopted distorted trigonal bipyramidal configuration. 2c displayed a distorted octahedron formed by six coordinated nitrogen atoms of the two ligands. linked by two bridged chloride atoms, complex 2d was a centrosymmetric dimmer, and complex 2h adopted a six-coordinate distorted octahedral geometry due to the coordination of two solvent molecules. these complexes activated by alkylaluminum were examined in butadiene polymerization. in combination with (albu3)-bu-i, complexes 2a-c exhibited high catalytic activity (73.5%-94.3%) at 20 degrees c, whereas other complexes exhibited much lower activity. interestingly, the activity and selectivity of the complexes increased as increasing polymerization temperature. in particular, 2b and 2c displayed both high activity (99% and 80%, respectively) and trans-1,4 selectivity (95.6% and 96.2%, respectively) at 60 degrees c the trans-1,4 selectivity of 2b varied as alkylaluminum used as a cocatalyst, in the following order: (albu3)-bu-i > aloct(3) > alet3 > alme3, whereas much lower trans-1,4 selectivity was observed in the cases of using mao and mmao. (c) 2013 elsevier ltd. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000323584600009
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49663]
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	Wang BL,Bi JF,Zhang CY,et al. Highly active and trans-1,4 specific polymerization of 1,3-butadiene catalyzed by 2-pyrazolyl substituted 1,10-phenanthroline ligated iron (II) complexes[J]. polymer,2013,54(19):5174-5181.
APA	Wang BL.,Bi JF.,Zhang CY.,Dai QQ.,Bai CX.,...&Jiang LS.(2013).Highly active and trans-1,4 specific polymerization of 1,3-butadiene catalyzed by 2-pyrazolyl substituted 1,10-phenanthroline ligated iron (II) complexes.polymer,54(19),5174-5181.
MLA	Wang BL,et al."Highly active and trans-1,4 specific polymerization of 1,3-butadiene catalyzed by 2-pyrazolyl substituted 1,10-phenanthroline ligated iron (II) complexes".polymer 54.19(2013):5174-5181.