THE HIGH RESOLUTION INFRARED VIBRATION-ROTATION BANDS OF $NO_{2}$
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Date
1974
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Ohio State University
Abstract
The $\nu_{2}$ and $\nu_{3}$ bands of $NO_{2}$ have been obtained under high resolution. The $\nu_{2}$ band has been completely analyzed and accurate constants calculated. The observed frequencies have been fitted using the Watson Hamiltonian. On combining data from the microwave spectrum, the $\nu_{2}$ and $2\nu_{3}$ IR bands improved ground state constants were obtained. The band center and rotational constants are:[FIGURE] Spin splitting has been observed for transitions with $K \ge 1$ and has been accounted for satisfactorily within a symmetric top approximation; spin splitting constants will be reported. The $\nu_{3}$ band has been fully calibrated. It is now being analyzed and it is hoped that a preliminary set of band constants will be available at the time this paper will be presented. The equilibrium structure has been calculated and will be reported.
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Author Institution: D\'{e}partement de Chimie, Universit\'{e} de Sherbrooke Qu\'{e}bec; National Bureau of Standards, Universit\'{e} de Sherbrooke Qu\'{e}bec