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Details van artikel 5 van 12 gevonden artikelen
| Titel: |
Laser infrared spectroscopy of vinyl fluoride in the 1280-1400 cm-1 region |
| Auteur: |
Stoppa, P. Charmet, A. Pietropolli Visinoni, R. Giorgianni, S. |
| Verschenen in: |
Molecular physics |
| Paginering: | Jaargang 103 (2005) nr. 5 pagina's 657-666 |
| Jaar: |
2005-03-10 |
| Inhoud: |
The infrared spectra of CH2=CHF have been investigated in the ν5 and ν6 band regions between 1280 and 1400 cm-1, at a resolution of about 0.002 cm-1, using a tunable diode laser spectrometer. These vibrations of symmetry species A' give rise to a/b-hybrid bands with different contributions from both the components. Spectral analysis resulted in the identification of 1565 (J≤46, Ka≤11) and 1651 (J≤48, Ka≤15) transitions of the ν5 and ν6 fundamentals, respectively. Both bands are perturbed by the nearby states ν8 + ν9 and ν9 + ν11 through different Coriolis resonances and an anharmonic interaction. Using Watson's A-reduction Hamiltonian in the Ir representation and perturbation operators almost all the transitions have been fitted simultaneously to a model including six resonances within the tetrad ν5/ν6/ν8 + ν9/ν9 + ν11. A set of spectroscopic constants for the ν5 and ν6 bands, as well as parameters for the dark states ν8 + ν9 and ν9 + ν11 and coupling constants, have been determined. From spectral simulations the dipole moment ratio |Δμa/Δμb| was estimated to be 0.6 ± 0.1 and 2.0±0.3 for the ν5 and ν6 bands, respectively. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 5 van 12 gevonden artikelen
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