MOLECULAR VIBRATION AND PSEUDO-ROTATION OF TETRAHYDRO FURAN
Loading...
Date
1962
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Pseudo-rotation of the 5-membered ring in tetrahydrofuran (tetramethylene oxide) [FIGURE] was studied by the conventional thermodynamic method. Contributions of pseudo-rotation to the heat capacity and entropy were obtained by subtracting the contributions of translation, over-all rotation, and vibration from the calorimetric values. Assignment of the fundamental vibrational frequencies was difficult because of the diffuse liquid-state spectra characteristic of pseudo-rotating molecules. The infrared spectrum for the solid state, in which pseudo-rotation presumably is prevented by crystal forces, was found to have sharp bands useful in locating the fundamental frequencies.
Description
Author Institution: Thermodynamics Laboratory of the Bartlesville, Bureau of Mines. U. S. Department of the Interior, Petroleum Research Center