Hydrogen-bonded liquid crystals built from hydrogen-bonding donors and acceptors -: Infrared study on the stability of the hydrogen bond between carboxylic acid and pyridyl moieties

被引：0
作者：
Kato, Takashi
Uryu, Toshiyuki
Kaneuchi, Fumiko
Jin, Chihiro
Frechet, Jean M. J.
机构：
[1] Univ Tokyo, Inst Ind Sci, Minato Ku, Tokyo 106, Japan
[2] Japan Spect Co Ltd, Hachioji, Tokyo 192, Japan
[3] Cornell Univ, Dept Chem, Baker Lab, Ithaca, NY 14853 USA
来源：
LIQUID CRYSTALS | 2006年 / 33卷 / 11-12期
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中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The stability of a hydrogen-bonded complex built through inter-molecular hydrogen bonding between carboxylic acid and pyridine fragments has been examined using infrared spectroscopy. Infrared spectra as a function of temperature have been recorded for the 1: 1 complex of 4-hexyloxybenzoic acid and trans-4-propoxy-49-stilbazole from the crystalline state to the isotropic state. A dependence of the stability of the hydrogen bond on molecular orientation is observed clearly in the infrared spectra. The spectra also suggest that the hydrogen bond is an un-ionized type with a double minimum potential energy.
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页码：1434 / 1437
页数：4
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