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Infrared Laser Spectroscopy of the ν4and ν9Band System of CH2F37Cl

✍ Scribed by A. Baldacci; P. Stoppa; S. Giorgianni; S. Ghersetti

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
104 KB
Volume
194
Category
Article
ISSN
0022-2852

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✦ Synopsis

The spectra of CH2F37Cl (95% isotopically pure sample) have been recorded at high resolution with a tunable diode laser spectrometer in the regions 979-1030 and 1108-1136 cm-1. The spectral analysis allowed us to assign about 2000 lines (J </= 61, Ka </= 26) of the nu9 band (nu0 = 1001.9360 cm-1), which, besides the expected c-type component, shows a more intense Coriolis-induced parallel component deriving its intensity from mixing with the nu4 vibrational state. In addition, the assignments of the nu4 band (nu0 = 1067.7138 cm-1), previously investigated, have been extended to higher Ka values and about 1300 new lines (J </= 69, 17 </= Ka </= 26) have been identified. The nu4 and nu9 bands have been fitted simultaneously to account for the first-order a- and b-type Coriolis coupling; interaction constants and excited state parameters up to the sextic terms have been obtained using Watson's A-reduction Hamiltonian in the Ir representation. Copyright 1999 Academic Press.

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