CCC-Pincer Bis(carbene) Lanthanide Dibromides. Catalysis on Highly cis-1,4-Selective Polymerization of Isoprene and Active Species

	CCC-Pincer Bis(carbene) Lanthanide Dibromides. Catalysis on Highly cis-1,4-Selective Polymerization of Isoprene and Active Species
	Lv, K ; Cui, DM
刊名	organometallics
	2010
卷号	29 期号:13 页码:2987-2993
关键词	ZIEGLER-NATTA CATALYSTS N-HETEROCYCLIC CARBENES STEREOSPECIFIC POLYMERIZATION MOLECULAR-STRUCTURE DIENE POLYMERIZATION BIS(N-HETEROCYCLIC CARBENE) METHYLALUMINOXANE CATALYST COMPLEXES YTTRIUM LIGAND
ISSN号	0276-7333
通讯作者	cui dm
中文摘要	a series of ccc-pincer 2,6-xylenyl bis(carbene)-ligated rare-earth metal dibromides (pbnhc)lnbr(2)(thf)((pbnhc) = 2,6-(2,4,6-me3c6h2nchchncch2)(2)c6h3; ln = sc (1), y (2), la (3), nd (4), sm (5), gd (6), dy (7), ho (8), tm (9), lu (10)) have been synthesized. upon activation with alr3 (r = me, et, bu-i) and [ph3c](+)[b(c6f5)(4)](-), complexes 2, 4, 6, 7, and 8 exhibited high activity and cis-1,4 selectivity (99.6%, 25 degrees c) toward the polymerization of isoprene, although complexes 1, 3, 5, 9, and 10 were inert. the selectivity was not affected by the nature of the central metal and alr3 and was maintained at elevated temperatures up to 80 degrees c (97.4%). the yttrium hydrido aluminate cation [(pbnhc)y(mu-h)(2)(albu2)-bu-i](+) was identified as the active species according to nmr spectroscopic analysis.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000279389500019
公开日期	2012-04-26
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/43620]
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	Lv, K,Cui, DM. CCC-Pincer Bis(carbene) Lanthanide Dibromides. Catalysis on Highly cis-1,4-Selective Polymerization of Isoprene and Active Species[J]. organometallics,2010,29(13):2987-2993.
APA	Lv, K,&Cui, DM.(2010).CCC-Pincer Bis(carbene) Lanthanide Dibromides. Catalysis on Highly cis-1,4-Selective Polymerization of Isoprene and Active Species.organometallics,29(13),2987-2993.
MLA	Lv, K,et al."CCC-Pincer Bis(carbene) Lanthanide Dibromides. Catalysis on Highly cis-1,4-Selective Polymerization of Isoprene and Active Species".organometallics 29.13(2010):2987-2993.