Improved ground-state spectroscopic parameters of CH2FI and assignment of the rotational spectrum of the [upsilon] 6 = 1 state

The rotational spectrum of fluoroiodomethane, CH2FI, has been recorded in the 1.02-1.05 THz frequency range, allowing us to extend the set of known spectroscopic parameters with respect to our previous work. In particular, three additional octic centrifugal-distortion constants and the K-dependence...

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Bibliographic Details
Published in:Molecular physics 2011-09, Vol.109 (17-18), p.2245
Main Authors: Cazzoli, Gabriele, Baldacci, Agostino, Baldan, Alessandro, Puzzarini, Cristina
Format: Article
Language:English
Subjects:
Spectrum analysis
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Summary:The rotational spectrum of fluoroiodomethane, CH2FI, has been recorded in the 1.02-1.05 THz frequency range, allowing us to extend the set of known spectroscopic parameters with respect to our previous work. In particular, three additional octic centrifugal-distortion constants and the K-dependence for all quadrupole-coupling constants have been determined. Furthermore, the rotational spectrum of the υ 6 = 1 vibrational state has been recorded and assigned in the 171-184 and 534-536 GHz frequency ranges, spanning the quantum number J from 4 to 79. This allowed us to provide for the first time accurate rotational, quartic, sextic, and three octic centrifugal-distortion constants and the iodine hyperfine parameters. [PUBLICATION ABSTRACT]
ISSN:0026-8976
1362-3028
DOI:10.1080/00268976.2011.609142