Indenyl Abstraction versus Alkyl Abstraction of [(Indenyl)ScR2(thf)] by [Ph3C] [B(C6F5)4]: Aspecific and Syndiospecific Styrene Polymerization

被引：58
作者：
Xu, Xin [1 ,2 ,3 ]
Chen, Yaofeng [1 ]
Sun, Jie [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organomet Chem, Shanghai 200032, Peoples R China
[2] E China Univ Sci & Technol, Adv Mat Lab, Shanghai 200237, Peoples R China
[3] E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China
来源：
CHEMISTRY-A EUROPEAN JOURNAL | 2009年 / 15卷 / 04期
基金：
中国国家自然科学基金;
关键词：
borates; cations; polymerization; rare-earth metals; substituent effects; OLEFIN-POLYMERIZATION; COMPLEXES BEARING; ORGANOMETALLIC COMPLEX; MOLECULAR-WEIGHT; CATALYSTS; SCANDIUM; ETHYLENE; LIGAND; COPOLYMERIZATION; REACTIVITY;
D O I：
10.1002/chem.200802220
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A method has been demonstrated to study the indenyl abstraction and alkyl abstraction of [(indenyl)ScR2(thf)] by [Ph3C] [B(C 6F5)4] through syndiospecific styerne polymerization. It was observed during the process that [Ph3C] [B(C6F5)4] can abstract the alkyl ligand and the π-bonded indenyl ligand. It was also found that the 1,3-bis-(methyl) indene and 1,3-bis-(isopropyl)indene ligand precursors tried for preparing mono(indenyl)-Sc-dialkyl complexes. It was also found that the increasing reaction temperature can caused the decomposition of the Sc-trialkyl complexes. The reaction of ligand precursors with the [Sc(CH2SiMe 3)3(thf)2] produced the mono-(indenyl)-Sc- dialkyl complexes. The abstraction path can be influenced by the substituents on the indenyl ligands.
引用
收藏
页码：846 / 850
页数：5
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