THE INFRARED SPECTRUM OF $N_{2}O_{4}$ IN THE GAS, LIQUID AND SOLID $PHASES^{\#}$
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Date
1956
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
In connection with our kinetic studies of some oxides of nitrogen, we have re-investigated the infrared spectrum of $N_{2}O_{4}$. In the gas phase the spectrum is that of an equilibrium mixture of $NO_{2}$ and $N_{2}O_{4}$. In order to obtain the spectrum of $N_{2}O_{4}$ alone, we have measured its infrared absorption spectrum in both the liquid phase and the solid phase. A special low-temperature liquid cell was constructed for this purpose. Our spectral data can be interpreted adequately in terms of a $V_{h}$ symmetry for the molecule, as is found to be the case in x-ray single crystal studies. The liquid and the solid spectra as well as the height of the internal rotational potential barrier estimated from these spectra will be discussed. The general applicability of the low-temperature liquid cell for other gases will also be discussed.
Description
$^{\#}$ Portion of this work was supported by the United States Navy, Bureau of Ordnance, through contract with the University of Minnesota.""
Author Institution: School of Chemistry, University of Minnesota
Author Institution: School of Chemistry, University of Minnesota