Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization

	Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization
	Liu ZZ ; Gao W ; Liu XM ; Luo XY ; Cui DM ; Mu Y
刊名	organometallics
	2011
卷号	30 期号:4 页码:749-756
关键词	ETHYLENE POLYMERIZATION SYNDIOTACTIC 1 OLEFIN POLYMERIZATION 2-POLYBUTADIENE DIENE POLYMERIZATION CONJUGATED DIOLEFINS ACTIVE CATALYSTS METHYL COMPOUNDS DONOR LIGAND OLIGOMERIZATION BUTADIENE
ISSN号	0276-7333
通讯作者	gao w
中文摘要	reactions of 2,6-(arn=ch)(2)c(6)h(3)li with crcl(2)(thf)(2) afford two trinuclear bis(imino)aryl ncn pincer cr(ii) complexes {[2,6-(arn=ch)(2)c(6)h(3)]cr(mu-cl)(2)}(2)cr [ar = 2,6-me(2)c(6)h(3) (1a), 2,6-et(2)c(6)h(3) (1b)], and a mononuclear bis(imino)aryl ncn pincer cr(ii) complex [2,6-(arn=ch)(2)c(6)h(3)]cr(mu-cl)(2)li(thf)(2) [ar = 2,6-(i)pr(2)c(6)h(3) (1c)], respectively. similar reactions of 2,6-(arn=ch)(2)c(6)h(3)li with crcl(3)(thf)(3) produce only mononuclear bis(imino)aryl ncn pincer cr(iii) complexes [2,6-(arn=ch)(2)c(6)h(3)]crcl(2)(thf) [ar = 2,6-me(2)c(6)h(3) (2a), 2,6-et(2)c(6)h(3) (2b), 2,6-(i)pr(2)c(6)h(3) (2c)]. x-ray crystallographic analysis reveals that the terminal cr(ii) atoms in la and lb and the cr(ii) atom in le possess a distorted trigonal bipyramidal coordination environment with the c(ipso) atom of the pincer ligand and two chloride atoms in the equator and the two imine nitrogen atoms in the apical positions, while the cr(iii) complexes 2a, 2b, and 2c all adopt a distorted octahedral geometry around the chromium metal. upon activation with trialkylaluminum and [ph3c](+)[b(c(6)f(5))(4)](-), the cr(iii) complexes show high catalytic activity for isoprene polymerization and afford polyisoprene with predominately trans-1,4 units, whereas the cr(i i) complexes are inert under the same conditions.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000287546600013
公开日期	2012-06-11
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44802]
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	Liu ZZ,Gao W,Liu XM,et al. Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization[J]. organometallics,2011,30(4):749-756.
APA	Liu ZZ,Gao W,Liu XM,Luo XY,Cui DM,&Mu Y.(2011).Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization.organometallics,30(4),749-756.
MLA	Liu ZZ,et al."Pincer Chromium(II) and Chromium(III) Complexes Supported by Bis(imino)aryl NCN ligands: Synthesis and Catalysis on Isoprene Polymerization".organometallics 30.4(2011):749-756.