MICROWAVE FOURIER TRANSFORM SPECTROSCOPY OF SULFURYL CHLORIDE FLUORIDE, $SO_{2}CIF$: STRUCTURE, HYPERFINE CONSTANTS, AND HARMONIC FORCE FIELD
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Date
1994
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Publisher
Ohio State University
Abstract
The pure rotational spectrum of sulfuryl chloride fluoride. $SO_{2}CIF$: has been investigated in the frequency range 5.6 - 24.0 GHz using a pulsed molecular-beam microwave Fourier transform spectrometer. Between 48 and 150 lines of 8 to 25 rotational transitions have been observed for the six isotopomers $SO_{2}CIF, SO_{2}^{37}CIF, ^{34}SO_{2}^{37}CIF, ^{34}SO_{2}^{37}CIF, SO^{18}OCIF$, and $SO^{18}O^{37}CIF$ (unlabeled atoms indicate $^{16}O, ^{19}F, ^{32}S and ^{35}Cl))$ in natural isotopic abundance. The rotational and quartic centrifugal distortion constants have been determined. $r_{0} r_{\Delta p}$, and $r_{8}$-type structural parameters have been evaluated. A harmonic force field has been calculated in order to derive ground stale average and estimated equilibrium bond lengths. Chlorine and fluorine hypertine structures have been resolved, allowing quadrupole coupling (including $\chi_{bc}$ for the isotopomers containing $^{18}O$) and spin-rotation constants to be determined. Variations of the chlorine quadrupole coupling constants with different isotopomers have allowed the quadrupole tensor to be diagonalized, and indicate $\chi_{zz}$ to coincide with the SCI band.
Description
Author Institution: Department of Chemistry, The University of British Columbia