Journal
JOURNAL OF PHYSICAL CHEMISTRY B
Volume 113, Issue 28, Pages 9538-9546Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp903702c
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Funding
- Russian Foundation for Basic Research [07-03-00541_a, 08-03-01045_a, 08-03-12090_ofi]
- Ministry of Education of the Republic of Belarus [37]
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The crystal structure of [C(n)mim]NTf2 (n = 2, 4, 6) was studied for the first time simultaneously by X-ray diffraction method and IR spectroscopy. The temperature-dependent IR spectrum for crystalline [C(4)mim]NTf2 was demonstrated to correlate with both the X-ray data and the calorimetric results obtained earlier. Therefore, it was found that IR spectroscopy is able to establish the correspondence between the X-ray and the calorimetric data ill this case. The joint use of X-ray diffraction, IR spectroscopy, and quantum-chemical calculations allowed us to determine the structure of all [C(2)mim]NTf2 crystalline modifications obtained earlier by adiabatic calorimetry measurements. Thus, a new approach for the future identification of ionic liquid crystal Structure by use of temperature-dependent infrared spectroscopy is suggested and justified.
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