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Rovibrational Analysis of the ν6 Bands of Four Symmetric Isotopomers of FClO3

✍ Scribed by G. Graner; F. Meguellati; A. Ceausu; K. Burczyk; G. Pawelke; P. Pracna

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
177 KB
Volume
197
Category
Article
ISSN
0022-2852

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✦ Synopsis

High-resolution (ca. 5 ϫ 10 Ϫ3 cm Ϫ1 ) infrared spectra of monoisotopic samples of F 35 Cl 16 O 3 , F 37 Cl 16 O 3 , F 35 Cl 18 O 3 , and F 37 Cl 18 O 3 have been recorded in the region of the 6 fundamental band. This band is centered at 405.6055, 405.5097, 390.5406, and 390.4984 cm Ϫ1 , respectively. About 1000 nonzero-weighted transitions were fitted for each isotopomer with an isolated band model, obtaining a s.d. on the residuals close to the experimental precision. Three different reductions of the Hamiltonian have been tested and found almost equally good, although FClO 3 is a nearly spherical top molecule. Each includes the l(2, 2) interaction and either a d t ⌬K ϭ Ϯ3 interaction term (reduction Q) an ⑀ t ⌬K ϭ Ϯ3 interaction term (reduction QD), or an l(2, Ϫ1) interaction (reduction D). Good agreement between the theoretical predictions for these reductions and the experimental data is observed.

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