高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (1): 122.

• 论文 • 上一篇    下一篇

邻乙氧基苯甲酸的氢键模式随温度的变化关系

王雁1, 孙梓明1, 戴晓畅2   

  1. 1. 云南师范大学化学系, 昆明, 650092;
    2. 云南大学化学系, 昆明
  • 收稿日期:1990-12-05 出版日期:1992-01-24 发布日期:1992-01-24
  • 通讯作者: 王雁
  • 基金资助:

    云南省应用基础基金

Temperature Dependence of the Pattern of Hydrogen Bonding in o-ethoxybenzoic Acid

WANG Yan1, SUN Zi-ming1, DAI Xiao-chang2   

  1. 1. Department of Chemistry, Yunnan Normal University, Kunming, 650092;
    2. Department of Chemistry, Yunnan University, Kunming
  • Received:1990-12-05 Online:1992-01-24 Published:1992-01-24

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摘要： 晶体中邻甲氧基苯甲酸以分子间氢键形成的二聚体形式存在[1],但邻乙氧基苯甲酸却以分子内氢键形成的单体存在[2,3].本文用低温红外光谱,结合氘代和酰氯化实验揭示了邻乙氧基苯甲酸晶体中也存在二聚体,但室温时含量很少,随着温度降低,含量逐渐增加.

关键词: 低温红外光谱, 邻乙氧基苯甲酸, 氢键

Abstract: The temperature-dependent IR spectra of o-ethoxy benzole acid reveal that the inter-molecular structure patterns in the liquid state are basically the same as those in the solid state close to its melting point, which exist in the form of intramolecular H-bonding.But at - 150℃ the characteristic carboxyl dimer absorptions were observed, whose intensities increase with the fall of temperature.Their OHvibrations were proved by the spectra of C2H5OC6H5COOD and C2H5OC6H5COCl.

Key words: Low temperatrue IR spectra, o-ethoxybenzoic acid, H-bonding

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