Archives of Acoustics, 18, 2, pp. 113-118, 1993
Ultrasonic investigations of the relaxation processes -0 related to the presence of the group – C = 0-NH in molecules \NH
Measurements of the velocity and the absorption coefficient of ultrasound were taken in monosubstituted amides as a function of temperature and frequen¬cy. It was found that a single relaxation process related to rotation of molecules around the C —N bond occurs over the temperature and frequency range inve¬stigated. Termodynamic parameters which characterize the process observed were determined.
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