INFRARED STUDIES OF CONDENSED PHASES OF CARBON TETRAFLUORIDE
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Date
1971
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Publisher
Ohio State University
Abstract
The infrared spectrum of carbon tetrafluoride has been obtained for the liquid and two solid phases, and through the first and second order transition points. These data have been analyzed numerically to give band moments and dipole auto-correlation functions for the different phases. The result of this analysis reveals no detectable change in rotational motion at the first order transition point, and a large change at the second order transition point. The carbon tetrafluoride molecule is not freely rotating in either the liquid or the high temperature solid phase, nor is it completely hindered in the low temperature solid phase. Nevertheless, there is a large decrease in rotational motion on the time scale of $10^{12}$ second, as the temperature falls through the second order transition point.
Description
Author Institution: Harvard University; Oak Ridge National Laboratory; Hollins College