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Millimeter and Submillimeter Spectroscopy of Chlorine Nitrate: The Cl Quadrupole Tensor and the Harmonic Force Field

✍ Scribed by Holger S.P. Müller; Paul Helminger; Sidney H. Young

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
548 KB
Volume
181
Category
Article
ISSN
0022-2852

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✦ Synopsis

The rotational spectra of 35 ClONO 2 and 37 ClONO 2 in their ground and first excited torsional states (v 9 Å 1) have been reinvestigated in selected regions between 84 and 441 GHz. An extensive set of spectroscopic constants has been determined, enabeling more accurate predictions of line positions in the submillimeter region. Accidental near-degeneracies of rotational levels cause perturbations of the quadrupole patterns, allow the observation of a DJ Å 2 transition, and result in the precise determination of x ab . The quartic distortion constants along with the vibrational wavenumbers and inertial defect differences have been used for a calculation of the harmonic force field. The assignments of the vibrational modes in terms of internal coordinates are discussed. The results are compared with properties of related molecules such as Cl 2 O.

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