Phase Transition of Quaternary Alkyl Halide Salts of 1,4-Diazabicyclo[2.2.2]octane
作者： Jun Shimizu , Kengo Imamura , Takashi Nogami , Hiroshi Mikawa
DOI: 10.1246/BCSJ.59.1443
关键词: Differential scanning calorimetry 、 Chemistry 、 Phase transition 、 Transition temperature 、 Stereochemistry 、 Crystallography 、 Octane 、 Alkyl 、 Atmospheric temperature range 、 Halide 、 DABCO 、 General chemistry
摘要: A series of quaternary alkyl halide salts 1,4-diazabicyclo[2.2.2]octane (DABCO) exhibited first-order phase transitions in the temperature range 62–100 °C Abrupt changes anion conductivities were observed by two to three orders magnitude at transition temperatures. The and heat tend increase with chain length. dependence an IR spectrum showed that band progressions due long disappeared above transition. This fact suggests trans-zigzag conformation chains low is destroyed internal rotation temperature.
csj.jp参考文章(17)
R.G. Snyder, J.H. Schachtschneider, Vibrational analysis of the n-paraffins—I: Assignments of infrared bands in the spectra of C3H8 through n-C19H40 Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. ,vol. 19, pp. 85- 116 ,(1963) , 10.1016/0371-1951(63)80095-8
K IMAMURA, T NOGAMI, H MIKAWA, Bromide anion conductivities of quaternary phosphonium bromides possessing long alkyl chains Solid State Ionics. ,vol. 17, pp. 77- 80 ,(1985) , 10.1016/0167-2738(85)90126-2
Akira Watanabe, The Synthesis and the Physical Properties of Normal Higher Primary Alcohols. V. Thermal and X-Ray Studies of the Polymorphism of Alcohols of Odd Carbon Numbers from Undecanol to Heptatriacontanol Bulletin of the Chemical Society of Japan. ,vol. 36, pp. 336- 340 ,(1963) , 10.1246/BCSJ.36.336
J. Rud Nielsen, C.E. Hathaway, Infrared spectra of normal paraffins in the hexagonal crystal form Journal of Molecular Spectroscopy. ,vol. 10, pp. 366- 377 ,(1963) , 10.1016/0022-2852(63)90182-6
J. Shimizu, T. Nogami, H. Mikawa, Phase transition of quaternary alkyl halide salts of diazabicyclo [2.2.2] octane Solid State Communications. ,vol. 54, pp. 1009- 1011 ,(1985) , 10.1016/0038-1098(85)90175-9
J SHIMIZU, T NOGAMI, H MIKAWA, Bromide ion conductivities of eutectic mixtures of quaternary ammonium bromides possessing long alkyl chains Solid State Ionics. ,vol. 14, pp. 153- 157 ,(1984) , 10.1016/0167-2738(84)90091-2
M. R. Barr, B. A. Dunell, R. F. Grant, PREMELTING PHENOMENA IN LONG-CHAIN FATTY ACIDS Canadian Journal of Chemistry. ,vol. 41, pp. 1188- 1196 ,(1963) , 10.1139/V63-167
Masamichi Kobayashi, Tohru Kobayashi, Yuzo Itoh, Kiyotaka Sato, Polytypism in n‐fatty acids and low‐frequency Raman spectra: Stearic acid B form The Journal of Chemical Physics. ,vol. 80, pp. 2897- 2903 ,(1984) , 10.1063/1.447039
David W. McClure, Nature of the Rotational Phase Transition in Paraffin Crystals The Journal of Chemical Physics. ,vol. 49, pp. 1830- 1839 ,(1968) , 10.1063/1.1670315
M FUJIMOTO, T NOGAMI, H MIKAWA, Halide-ion conductivities of the complexes of cryptand[2.2.2] with alkali-metal halides and alkaline earth metal halides Solid State Ionics. ,vol. 11, pp. 313- 315 ,(1984) , 10.1016/0167-2738(84)90023-7