RAMAN AND INFRARED SPECTRA OF $N_{2}O_{4}^{*}$

$^{*}$ This paper is based on work performed for the U.S. Atomic Energy Commission by Union Carbide Nuclear Company.Author Institution: Chemistry Division, Oak Ridge National Laboratory; Chemistry Division, University of TennesseeThe Raman spectra of liquid and solid $N_{2}^{14}O_{4}$ and $N_{2}^{15}O_{4}$ have been examined at $-35^{\circ} C$ using a Cary Model 81 Raman spectrophotometer. Measurements have been made of the isotopic shift of the observed bands. Infrared measurements have also been made of the bands of gaseous and liquid $N_{2}^{14}O_{4}$ and $N_{2}^{15}O_{4}$ using $CsBr_{1}$, NaCl and $CaF_{2}$ prisms. Assignments have been made of the observed bands and these assignments will be discussed in the light of the isotopic product rules involved