作　　者： ; ; ; ;

机构地区： 吉林大学物理学院

出　　处： 《化学通报》 2013年第2期167-170,共4页

摘　　要： 氢键的形成能够使参与形成氢键的原化学键力常数降低,吸收频率移向低波数方向,同时吸收强度增加。为了介绍怎样利用红外光谱技术研究氢键的键合方式,本文以联酰胺衍生物为例,主要运用变温红外光谱技术分析NH伸缩振动波数、强度以及形成氢键的键长随温度的变化来研究羰基(C O)与氨基(H—N)之间的氢键形式。结果表明,本文举例中联酰胺基团中的C O与H—N以分子间氢键形式存在。 Hydrogen bonds can reduce the force constant of chemical bond, which make the vibrational frequencies shift to low wavenumbers and absorption intensities increase. In order to study the hydrogen-bonding motif with IR, in this paper, as an example of hydrazide derivatives, temperature dependent IR spectroscopic experiments were performed to analyze both the change of the intensity and wavenumber of v（N--H） and the hydrogen bonding length of N--H…C = 0 for confirming the hydrogen-bonding motif of N--H and C = 0 groups. The results showed that the NH in hydrazide group are involved in intermolecu]ar hydrogen bonding with C = 0 groups in this example.

关 键 词： 红外光谱 分子间氢键 分子内氢键 吸收谱带

领　　域： [理学]