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Matsumoto, Kazuhiko*; Hagiwara, Rika*; Ito, Yasuhiko*; Kohara, Shinji*; Suzuya, Kentaro
Nuclear Instruments and Methods in Physics Research B, 199, p.29 - 33, 2003/01
Times Cited Count：34 Percentile：88.64(Instruments & Instrumentation)The structure of 1-ethyl-3-methylimidazolium bifluoride (EMImF
HF) melt has been analyzed at 333 K by a high-energy synchrotron X-ray diffraction method. The total correlation function of the EMImFHF melt was similar to that of the solid state, indicating that not only the short-range but also the intermediate-range ordering in the solid are partially preserved in the liquid state. The intra-molecular F-F correlation in the anions clearly appears in the total correlation function of the EMImFHF melt, whereas prominent peaks are not observed in the case of a room temperature molten salt, 1-ethyl-3-methylimidazolium fluorohydrogenate (EMImF2.3HF).
Hagiwara, Rika*; Matsumoto, Kazuhiko*; Tsuda, Tetsuya*; Ito, Yasuhiko*; Kohara, Shinji*; Suzuya, Kentaro; Matsumoto, Hajime*; Miyazaki, Yoshinori*
Journal of Non-Crystalline Solids, 312-314, p.414 - 418, 2002/10
Times Cited Count：32 Percentile：85.69(Materials Science, Ceramics)The structures of a series of XF
2.3HF (X= 1-methylimidazolium (MI), 1-ethyl-3-methylimidazolium (EMI), 1-butyl-3-methylimidazolium (BMI), 1-hexyl-3-methyl-imidazolium (HMI)) room temperature molten salts have been investigated by high-energy synchrotron X-ray diffraction technique. The correlation peaks appeared in the total correlation function are mainly ascribed to intra-molecular correlation of alkylimidazolium cations. However, it is suggested that the peak at around 3.6 
is ascribed not only to intra-molecular but also inter-molecular correlation of the cation. The contribution of the latter is also supported by the first sharp diffraction peak of the total structure factor found at almost the same position as that of a Bragg peak in the simulated X-ray diffraction pattern of solid EMIFHF with a layered structure, corresponding to the layer separation of
Hagiwara, Rika*; Matsumoto, Kazuhiko*; Tsuda, Tetsuya*; Kohara, Shinji*; Suzuya, Kentaro; Ito, Yasuhiko*
Proceedings of 6th International Symposium on Molten Salts Chemistry and Technology (MS6), p.136 - 139, 2001/10
no abstracts in English
