Amine N-H Stretching Vibrations

It is sometimes useful to convert tertiary amines into their hydrochlorides and then examine the resulting spectra for the presence of a band due to the N-H stretching vibration, a technique which may also be found useful for distinguishing between imines and amines. 

N-H stretching vibrations result in bands of weak-to-medium intensity in the Raman spectra of amines. (For peptides see Chapter 23.) 

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