High precision rovibrational and hyperfine analysis of the v 4 =1 level of bromochlorofluoromethane
| Autor: | Michael Ziskind, Thibaut Marrel, Christophe Daussy, Christian Chardonnet |
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| Rok vydání: | 2001 |
| Předmět: |
Spectrometer
Absorption spectroscopy Bromochlorofluoromethane Infrared Organic Chemistry Rotational–vibrational spectroscopy Analytical Chemistry Isotopomers Inorganic Chemistry chemistry.chemical_compound chemistry Quadrupole Physics::Atomic Physics Physics::Chemical Physics Atomic physics Hyperfine structure Spectroscopy |
| Zdroj: | Journal of Molecular Structure. 599:195-209 |
| ISSN: | 0022-2860 |
| DOI: | 10.1016/s0022-2860(01)00851-1 |
| Popis: | We performed a ultra high resolution infrared spectroscopic analysis of the CF-stretching fundamental ν 4 of CHFClBr at 9.4 μm. The saturated absorption spectra of the hyperfine structures of many rovibrational transitions of its two more abundant isotopomers were recorded with our high resolution CO 2 laser-based spectrometer. This led to the determination of the complete quadrupole coupling tensors of the 3/2 nuclear spins of the bromine and the chlorine in the v 4 =1 level, which allow the prediction of the hyperfine structure of any rovibrational line with an accuracy of a few kHz. By studying the isotopic dependence of these molecular constants, the quadrupole coupling tensors of two other isotopomers were extrapolated. We also report promising preliminary results of the determination of the rotational and centrifugal distortion constants of the same vibrational level. |
| Databáze: | OpenAIRE |
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