Highly 3,4-selective living polymerization of 2-phenyl-1,3-butadiene with amidino N-heterocyclic carbene ligated rare-earth metal bis(alkyl) complexes

	Highly 3,4-selective living polymerization of 2-phenyl-1,3-butadiene with amidino N-heterocyclic carbene ligated rare-earth metal bis(alkyl) complexes
	Yao, Changguang 1,2; Xie, Hongyan 1,2; Cui, Dongmei 1
刊名	RSC ADVANCES
	2015
卷号	5 期号:113 页码:93507-93512
英文摘要	A series of amidino N-heterocyclic carbene ligand supported rare-earth metal bis(alkyl) complexes (2,6-(R2C6H3N)-C-1=(CRNCH2CH2)-N-2(NCHCHN(C6H2Me3-2,4,6)C))Ln(CH2SiMe3)(2) [R-1 = Pr-i, R-2 = Ph, Ln = Lu (1a); R-1 = Pr-i, R-2 = Ph, Ln = Sc (1b); R-1 = iPr, R-2 = Bu-t, Ln = Lu (2a); R-1 = Me, R-2 = Ph, Ln = Lu (3a)] were synthesized and characterized by NMR spectroscopy. On activation with [(Ph3C)][(B(C6F5)(4))], complexes 1a, 2a and 3a exhibited high activities and high 3,4-selectivities (96.9%) for the polymerization of 2-phenyl-1,3-butadiene in a living mode to afford new plastic polydienes with high glass-transition temperatures (44.3-56.1 degrees C). The 3,4-selectivity decreased with increasing the polymerization temperature (25-60 degrees C), but increased with polarity of polymerization solvent in the order of chlorobenzene > toluene > cyclohexane. In contrast, complex 1b was almost inert for the polymerization of 2-phenyl-1,3-butadiene owing to its steric bulkiness.
收录类别	SCI
语种	英语
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/29179]
专题	化学研究所_高分子物理与化学实验室
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Changchun Branch, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Yao, Changguang,Xie, Hongyan,Cui, Dongmei. Highly 3,4-selective living polymerization of 2-phenyl-1,3-butadiene with amidino N-heterocyclic carbene ligated rare-earth metal bis(alkyl) complexes[J]. RSC ADVANCES,2015,5(113):93507-93512.
APA	Yao, Changguang,Xie, Hongyan,&Cui, Dongmei.(2015).Highly 3,4-selective living polymerization of 2-phenyl-1,3-butadiene with amidino N-heterocyclic carbene ligated rare-earth metal bis(alkyl) complexes.RSC ADVANCES,5(113),93507-93512.
MLA	Yao, Changguang,et al."Highly 3,4-selective living polymerization of 2-phenyl-1,3-butadiene with amidino N-heterocyclic carbene ligated rare-earth metal bis(alkyl) complexes".RSC ADVANCES 5.113(2015):93507-93512.