Experimental vibratnional study of imidazolium-based ionic liquids: Raman and infrared spectra of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and 1-ethyl-3-methylimidazolium ethylsulfate

被引：291

作者：

Kiefer, Johannes ^{[1
]}

Fries, Juergen ^{[2
]}

Leipertz, Alfred ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Lehrstuhl Tech Thermodynam, D-91058 Erlangen, Germany

[2] Robert Bosch GmbH, AnP, QMM8, D-91522 Ansbach, Germany

来源：

APPLIED SPECTROSCOPY | 2007年 / 61卷 / 12期

关键词：

Raman spectroscopy; infrared spectroscopy; ionic liquid; imidazolium;

D O I：

10.1366/000370207783292000

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The vibrational structure of two room-temperature ionic liquids with the cation 1-ethyl-3-methylimidazolium [EMIM] and the respective anions bis(trifluoromethylsulfonyl)imide [TFSI] and ethylsulfate [EtOSO3] IS investigated. In particular, attenuated total reflection (ATR) infrared (IR) as well as Raman spectra in the spectral range from 500 to 3500 cm(-1) have been recorded and analyzed. Moreover, the depolarization ratios of the Raman lines are determined. The individual peaks are assigned to the corresponding vibrational modes of the molecules. While the CH stretching region around 3000 cm(-1) is dominating in Raman spectra, it is remarkably weak in IR spectra. Finally, the results for 1-ethyl-3methylimidazolium bis(trifluoromethylsulfonyl)imide are compared to previous studies of single ions available in the literature. This comparison shows good agreement.

引用

页码：1306 / 1311

页数：6

共 35 条

[11] Conformational isomerism and phase transitions in tetraethylammonium bis(trifluoromethanesulfonyl)imide Et4NTFSI [J].

Herstedt, M ;

Henderson, WA ;

Smirnov, M ;

Ducasse, L ;

Servant, L ;

Talaga, D ;

Lassègues, JC .

JOURNAL OF MOLECULAR STRUCTURE, 2006, 783 (1-3) :145-156

[12] Spectroscopic characterization of the conformational states of the bis (trifluoromethanesulfonyl)imide anion (TFSI-) [J].

Herstedt, M ;

Smirnov, M ;

Johansson, P ;

Chami, M ;

Grondin, J ;

Servant, L ;

Lassègues, JC .

JOURNAL OF RAMAN SPECTROSCOPY, 2005, 36 (08) :762-770

[13] Reaction-technical examinations for the transesterification of ionic fluid 1-Ethyl-3-methylimidazoliumethylsulfate ([EMIM][EtOSO3]) [J].

Himmler, Simone ;

Hormann, Stefanie ;

Katharina, Obert ;

Wasserscheid, Peter .

CHEMIE INGENIEUR TECHNIK, 2007, 79 (04) :421-428

[14] Density and viscosity of several pure and water-saturated ionic liquids [J].

Jacquemin, J ;

Husson, P ;

Padua, AAH ;

Majer, V .

GREEN CHEMISTRY, 2006, 8 (02) :172-180

[15] Simultaneous laser-induced fluorescence and sub-Doppler polarization spectroscopy of the CH radical [J].

Kiefer, Johannes ;

Li, Zhongshan ;

Zetterberg, Johan ;

Linvin, Martin ;

Alden, Marcus .

OPTICS COMMUNICATIONS, 2007, 270 (02) :347-352

[16] Raman and ab initio study of the conformational isomerism in the 1-ethyl-3-methyl-imidazolium bis(trifluoromethanesulfonyl)imide ionic liquid [J].

Lassegues, J. C. ;

Grondin, J. ;

Holomb, R. ;

Johansson, P. .

JOURNAL OF RAMAN SPECTROSCOPY, 2007, 38 (05) :551-558

[17] Catalysis - A greener solution [J].

Leitner, W .

NATURE, 2003, 423 (6943) :930-931

[18] A refined force field for molecular simulation of imidazolium-based ionic liquids [J].

Liu, ZP ;

Huang, SP ;

Wang, WC .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (34) :12978-12989

[19]

Long D. A., 1977, RAMAN SPECTROSCOPY

[20] Using spectroscopic data on imidazolium cation conformations to test a molecular force field for ionic liquids [J].

Lopes, JNAC ;

Pádua, AAH .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (14) :7485-7489

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