Int. J. Mol. Sci. 2006, 7(10), 417-424; doi:10.3390/i7100417
Article

Conformations of 1-Butyl-3-methylimidazolium Chloride Probed by High Pressure Raman Spectroscopy

1 Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974, Taiwan 2 Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan 3 Institute of Atomic and Molecular Sciences, Academia Sinica, P. O. Box 23-166, Taipei 106, Taiwan 4 Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
* Author to whom correspondence should be addressed.
Received: 7 September 2006; in revised form: 29 September 2006 / Accepted: 16 October 2006 / Published: 25 October 2006
(This article belongs to the Special Issue Ionic Liquids)
PDF Full-text Download PDF Full-Text [80 KB, uploaded 20 June 2008 16:51 CEST]
Abstract: The behavior of 1-butyl-3-methylimidazolium chloride has been investigated byRaman spectroscopy as a function of hydrostatic pressure. Under ambient pressure tworotational isomers (GA and AA forms) of the 1-butyl-3-methylimidazolium cation coexist inthe ionic liquid state. As the supercooled liquid was compressed from ambient to 0.9 GPa,the contribution of the GA conformer decreases in intensity as the pressure was elevated. Anew high pressure phase is formed above the pressure of 1.5 GPa. This new high pressurephase of 1-butyl-3-methylimidazolium chloride arises from perturbed GA conformer, i.e.,distorted Crystal 2. Crystal 1 form (AA form) is known as a thermodynamically stable formunder ambient pressure. Nevertheless, crystal 1 form is switched to a metastable state underthe condition of high pressure.
Keywords: Raman spectroscopy; High pressure; 1-Butyl-3-methylimidazolium chloride.

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Chang, H.-C.; Chang, C.-Y.; Su, J.-C.; Chu, W.-C.; Jiang, J.-C.; Lin, S.H. Conformations of 1-Butyl-3-methylimidazolium Chloride Probed by High Pressure Raman Spectroscopy. Int. J. Mol. Sci. 2006, 7, 417-424.

AMA Style

Chang H-C, Chang C-Y, Su J-C, Chu W-C, Jiang J-C, Lin SH. Conformations of 1-Butyl-3-methylimidazolium Chloride Probed by High Pressure Raman Spectroscopy. International Journal of Molecular Sciences. 2006; 7(10):417-424.

Chicago/Turabian Style

Chang, Hai-Chou; Chang, Chao-Yen; Su, Jong-Chang; Chu, Wen-Chi; Jiang, Jyh-Chiang; Lin, Sheng Hsien. 2006. "Conformations of 1-Butyl-3-methylimidazolium Chloride Probed by High Pressure Raman Spectroscopy." Int. J. Mol. Sci. 7, no. 10: 417-424.

Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert