Infrared Analysis of the Anharmonic Resonance between ν8+ ν9and the Dark State ν6+ ν7of HNO3
The high-resolution FTIR spectrum of the ν8+ ν9band of HNO3around 1205 cm−1has been measured and analyzed. The bright state was found to be strongly perturbed by its neighboring dark state ν6+ ν7at the coincident levels. Taking account of the ΔK= ±2 anharmonic resonance, a simultaneous fit of ν8+ ν9...
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| Veröffentlicht in: | Journal of molecular spectroscopy 1997-06, Vol.183 (2), p.407-413 |
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| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | The high-resolution FTIR spectrum of the ν8+ ν9band of HNO3around 1205 cm−1has been measured and analyzed. The bright state was found to be strongly perturbed by its neighboring dark state ν6+ ν7at the coincident levels. Taking account of the ΔK= ±2 anharmonic resonance, a simultaneous fit of ν8+ ν9and ν6+ ν7was performed leading to a good reproduction of the ν8+ ν9band with a rms uncertainty of 0.00046 cm−1. A set of rovibrational constants for ν8+ ν9were accurately determined, while for ν6+ ν7the rotational constantBand the band origin were obtained. |
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| ISSN: | 0022-2852 1096-083X |
| DOI: | 10.1006/jmsp.1997.7294 |