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

Zofia Bartynowska-Meus
Institute of Chemistry, Jagiellonian University
Poland

Adam Juszkiewicz
Institute of Chemistry, Jagiellonian University
Poland

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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