Knowledge Bank

The $5\mu m$ vib-rotational spectrum of $\mathrm{<mrow\; data-mjx-texclass="ORD">12</mrow>}CD3F$ exhibits a large number of perturbations as a result of interactions between many of the 24 vibrational levels in the region $(\sim 1920-2340cm-1)$. Many of the localized resonances have been identified and the interpretation and analysis is continuing. The ultimate goal is the complete analysis of the observed $5\mu m$ spectrum. The fundamentals $\upsilon 1$ and $\upsilon 4$ are the principle bands in the region and they exhibit local crossings throughout most of the spectrum. Other bands that contribute significantly to the resonances are $2\upsilon 5,2\upsilon 20,2\upsilon 30,\upsilon 2+\upsilon 5$ and $\upsilon 3+\upsilon 5$. The resonances will be discussed and the effects on the spectrum will be detailed.