MILLIMETER AND SUBMILLIMETER SPECTROSCOPY OF CHLORINE NITRATE: THE Cl QUADRUPOLE TENSOR AND THE HARMONIC FORCE FIELD
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Date
1996
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Publisher
Ohio State University
Abstract
The rotational spectrum of $CIONO_{2}$ has been (re-) investigated in the millimeter and submillimeter regions in the ground vibrational and first excited torsional states for both $^{35}$Cl and $^{37}$Cl isotopomers. A large number of $a$- and $b$-type $R$- and $Q$-branch as well as $b$-type $P$-branch transitions have been observed. This has enabled the improvement of the spectroscopic constants and the prediction of lines in the submillimeter region. Accidental near-degeneracies of rotational levels allowed the observation of a $\Delta J = 2$ transition and the precise determination of the off-diagonal quadrupole coupling constant $\chi_{ab}$. The quartic distortion constants along with the vibrational wavenumbers and inertial defects have been used to calculate a harmonic force field. The results will be related to the molecular structure determined from an electron diffraction study and to data from related molecules such as $Cl_{2}O$.
Description
Author Institution: Jet Propulsion Laboratory, California Institute of Technology; Department of Physics, University of South Alabama; Department of Chemistry, University of South Alabama