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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Infrared Study of Weakly Bound Hydrogen Bonds in Crystalline Sodium Sulfanilate Dihydrate
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Infrared Study of Weakly Bound Hydrogen Bonds in Crystalline Sodium Sulfanilate Dihydrate

机译：结晶二水合氨基磺酸钠晶体中弱结合氢键的红外研究

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We have studied the infrared spectra of the O-H(D) hydrogen bonds from the water and N-H(D) bonds from the NH_2 group in the title compound as functions of deuterium concentration and temperature. Some of the vibrational stretching bands are re-assigned. The crystal contains two distinct water molecules. The two O-D bands from one HOD molecule merge together as the temperature is raised, suggesting homogenization of the environments of two O-D's due to increasing librational motion. The two O-D bands from the other HOD molecule behave as expected and do not merge over the temperature range. The two N-D bands of the HND group show the overlap or resonances between the N-D bands and combination bands. The shifts with temperature o the various stretching bands of the hydrogen-bonded atoms are in agreement with the changes expected from the changes in structure determined by previous X-ray analyses.
机译：我们研究了标题化合物中水的O-H（D）氢键和NH_2基团的N-H（D）键的红外光谱与氘浓度和温度的关系。重新分配了一些振动拉伸带。晶体包含两个不同的水分子。随着温度升高，来自一个HOD分子的两个O-D谱带合并在一起，这表明由于自由运动的增加，两个O-D的环境均质化。来自另一个HOD分子的两个O-D谱带按预期表现，并且在温度范围内不合并。 HND组的两个N-D波段显示N-D波段和组合波段之间的重叠或共振。氢键原子的各种拉伸带随温度的变化与通过先前的X射线分析确定的结构变化所预期的变化一致。

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