Pressure-Induced Spectral Changes of Room-Temperature Ionic Liquid, N,N-Diethyl-N-methyl-N-(2-methoxyethyl)ammonium Bis(trifluoromethylsulfonyl)imide, [DEME][TFSI]

被引：50
|
作者：
Yoshimura, Yukihiro [1 ]
Takekiyo, Takahiro [1 ]
Imai, Yusuke [2 ]
Abe, Hiroshi [2 ]
机构：
[1] Natl Def Acad, Dept Appl Chem, Yokosuka, Kanagawa 2398686, Japan
[2] Natl Def Acad, Dept Mat Sci & Engn, Yokosuka, Kanagawa 2398686, Japan
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 03期
关键词：
1-BUTYL-3-METHYLIMIDAZOLIUM HALIDES; CONFORMATIONAL ISOMERISM; RAMAN; ORGANIZATION; EQUILIBRIUM; CALIBRATION; GAUGE; ANION; WATER;
D O I：
10.1021/jp205314f
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We have investigated pressure-induced Raman spectral changes of ionic liquid, N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethylsulfonyl)imide ([DEME][TESI]) up to 5.5 GPa. We found that the CH stretching spectrum of [DEME] cation changes significantly above 4 GPa together with the large shift of conformational equilibrium between C-1 and C-2 conformers of [TFSI] anion toward C-2 one. The results along with the visual observations show that no crystallization occurs even at 5.5 GPa. We suppose that structural organization in [DEME][TFSI] might significantly change at 4 to 5 GPa region.
引用
收藏
页码：2097 / 2101
页数：5
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