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,但邻乙氧基苯甲酸却以分子内氢键形成的单体存在.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.
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 OH vibrations were proved by the spectra of C2H5OC6H5COOD and C2H5OC6H5COCl.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第1期122-124,共3页
Chemical Journal of Chinese Universities
基金
云南省应用基础基金
关键词
乙氧基苯甲酸
氢键
低温红外光谱
Low temperatrue IR spectra, o-ethoxybenzoic acid, H-bonding
