THE INFRARED SPECTRA OF SECONDARY AMINES AND THEIR SALTS
THE INFRARED SPECTRA OF SECONDARY AMINES AND THEIR SALTS
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DOI：
10.1139/v56-231
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发表时间：
1956-01-01
期刊：
影响因子：
--
通讯作者：
MARION, L
中科院分区：
文献类型：
--
作者：
HEACOCK, RA;MARION, L
本文研究了一些仲碱及其盐的红外光谱。盐的光谱不同于相应碱的光谱，因为盐中含有几个碱所没有的吸收带。在1620 ~ 1560 cm-1区域的NH 2+形变振动的新谱带是仲胺盐的特征谱带，可用于检测原分子中仲氨基的存在。 芳香基的光谱是复杂的，因为环吸收发生在同一区域，但在许多情况下，仍然可以进行分配，虽然不太确定。在两性离子物质如仲脂肪族氨基酸中，该功能更难以检测。
The infrared spectra of a number of secondary bases and of their salts have been examined. The spectra of the salts differ from those of the corresponding bases in containing several absorption bands that are absent from the latter. Those of the new bands occurring in the region 1620 to 1560 cm.−1, which are due to NH2+deformation vibrations, are characteristic of secondary amine salts, and can be used to detect the presence of a secondary amino group in the original molecule. With aromatic bases the spectra are complicated because the ring absorption occurs in the same region, but in many cases the assignment can still be made, although with less certainty. In zwitterionic substances such as the secondary aliphatic amino acids, the function is more difficult to detect.