Synthesis of the first rare earth metal bis(alkyl)s bearing an indenyl functionalized N-heterocyclic carbene

doi:10.1021/om0700922

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	Synthesis of the first rare earth metal bis(alkyl)s bearing an indenyl functionalized N-heterocyclic carbene
	Wang, Baoli ; Wang, Dun ; Cui, Dongmei ; Gao, Wei ; Tang, Tao ; Chen, Xuesi ; Jing, Xiabin
刊名	ORGANOMETALLICS
	2007-06-18
卷号	26 期号:13 页码:3167-3172
ISSN号	0276-7333
DOI	10.1021/om0700922
英文摘要	Treatment of indenyl-modified imidazolium bromide [C9H7CH2CH2(NCHCHN(C6H2Me3-2,4,6)CH)Br] ((IndH-NHC-H)Br) with rare earth metal tetra(alkyl) lithium (Ln(CH2SiMe3)(4)Li(THF)(4)) or with (trimethylsilylmethyl)lithium (LiCH2SiMe3) and rare earth metal tris(alkyl)s (Ln(CH2SiMe3)(3)(THF)(2)) sequentially afforded the first NHC-stabilized monomeric rare earth metal bis(alkyl) complexes (Ind-NHC)Ln(CH2SiMe3)(2) (1, Ln = Y; 2, Ln = Lu; 3, Ln = Sc) via double-deprotonation reactions. Complexes 1-3 are THF-free isostructural monomers. The monoanionic Ind-NHC species bond to the central metal ion in a eta(5):kappa(1) constrained geometry configuration (CGC) mode, which combine with the two cis-located alkyl moieties to form a tetrahedron ligand core, leading to the chirality of the complexes. Under the presence of activators AlEt3 and [Ph3C][B(C6F5)(4)], complex 2 showed catalytic activity toward the polymerization of isoprene to afford 3,4-regulated polyisoprene (91%).
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000247108100015
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/61697]
专题	中国科学院化学研究所
通讯作者	Cui, Dongmei
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wang, Baoli,Wang, Dun,Cui, Dongmei,et al. Synthesis of the first rare earth metal bis(alkyl)s bearing an indenyl functionalized N-heterocyclic carbene[J]. ORGANOMETALLICS,2007,26(13):3167-3172.
APA	Wang, Baoli.,Wang, Dun.,Cui, Dongmei.,Gao, Wei.,Tang, Tao.,...&Jing, Xiabin.(2007).Synthesis of the first rare earth metal bis(alkyl)s bearing an indenyl functionalized N-heterocyclic carbene.ORGANOMETALLICS,26(13),3167-3172.
MLA	Wang, Baoli,et al."Synthesis of the first rare earth metal bis(alkyl)s bearing an indenyl functionalized N-heterocyclic carbene".ORGANOMETALLICS 26.13(2007):3167-3172.