High-resolution infrared spectroscopy of the interacting ν9, ν5 + ν6 and 3ν6 levels of CH279BrF

R. Visinoni; A. Baldacci; René Wugt Larsen

doi:10.1016/j.jms.2011.07.006

High-resolution infrared spectroscopy of the interacting ν₉, ν₅ + ν₆ and 3ν₆ levels of CH₂⁷⁹BrF

R. Visinoni, A. Baldacci, René Wugt Larsen

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The high-resolution (0.0030 cm1) Fourier transform infrared spectrum of CH279BrF has been studied in part of the atmospheric window between 910 and 980 cm1, the region of the m9 (935.847 cm1) and m5 + m6 (961.239 cm1) bands. The m9 fundamental consists of a pseudo a-type band induced by Coriolis coupling with m5 + m6, in turn exhibiting a predominant a-type structure. Several interactions connecting these levels and the dark state 3m6 have been assessed. The whole data set is treated using Watson’s Areduced Hamiltonian in the Ir representation implemented with first order a- and b- and c-type Coriolis terms. A detailed analysis of the rotational structure yields a set of accurate upper-state parameters up to quartic distortion terms for m9 and m5 + m6. In addition, spectroscopic information about the dark ternary overtone of m6 has been obtained.

Original language	English
Journal	Journal of Molecular Spectroscopy
Volume	269
Pages (from-to)	226–230
ISSN	0022-2852
DOIs	https://doi.org/10.1016/j.jms.2011.07.006
Publication status	Published - 2011
Externally published	Yes

Keywords

Bromofluoromethane
High-resolution FTIR spectroscopy
Molecular constants
Coriolis interactions

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10.1016/j.jms.2011.07.006

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@article{8f1bbaa7c76b46089269a5087dcb3638,

title = "High-resolution infrared spectroscopy of the interacting ν9, ν5 + ν6 and 3ν6 levels of CH279BrF",

abstract = "The high-resolution (0.0030 cm1) Fourier transform infrared spectrum of CH279BrF has been studied in part of the atmospheric window between 910 and 980 cm1, the region of the m9 (935.847 cm1) and m5 + m6 (961.239 cm1) bands. The m9 fundamental consists of a pseudo a-type band induced by Coriolis coupling with m5 + m6, in turn exhibiting a predominant a-type structure. Several interactions connecting these levels and the dark state 3m6 have been assessed. The whole data set is treated using Watson{\textquoteright}s Areduced Hamiltonian in the Ir representation implemented with first order a- and b- and c-type Coriolis terms. A detailed analysis of the rotational structure yields a set of accurate upper-state parameters up to quartic distortion terms for m9 and m5 + m6. In addition, spectroscopic information about the dark ternary overtone of m6 has been obtained.",

keywords = "Bromofluoromethane, High-resolution FTIR spectroscopy, Molecular constants, Coriolis interactions",

author = "R. Visinoni and A. Baldacci and Larsen, {Ren{\'e} Wugt}",

year = "2011",

doi = "10.1016/j.jms.2011.07.006",

language = "English",

volume = "269",

pages = "226–230",

journal = "Journal of Molecular Spectroscopy",

issn = "0022-2852",

publisher = "Academic Press",

}

TY - JOUR

T1 - High-resolution infrared spectroscopy of the interacting ν9, ν5 + ν6 and 3ν6 levels of CH279BrF

AU - Visinoni, R.

AU - Baldacci, A.

AU - Larsen, René Wugt

PY - 2011

Y1 - 2011

N2 - The high-resolution (0.0030 cm1) Fourier transform infrared spectrum of CH279BrF has been studied in part of the atmospheric window between 910 and 980 cm1, the region of the m9 (935.847 cm1) and m5 + m6 (961.239 cm1) bands. The m9 fundamental consists of a pseudo a-type band induced by Coriolis coupling with m5 + m6, in turn exhibiting a predominant a-type structure. Several interactions connecting these levels and the dark state 3m6 have been assessed. The whole data set is treated using Watson’s Areduced Hamiltonian in the Ir representation implemented with first order a- and b- and c-type Coriolis terms. A detailed analysis of the rotational structure yields a set of accurate upper-state parameters up to quartic distortion terms for m9 and m5 + m6. In addition, spectroscopic information about the dark ternary overtone of m6 has been obtained.

AB - The high-resolution (0.0030 cm1) Fourier transform infrared spectrum of CH279BrF has been studied in part of the atmospheric window between 910 and 980 cm1, the region of the m9 (935.847 cm1) and m5 + m6 (961.239 cm1) bands. The m9 fundamental consists of a pseudo a-type band induced by Coriolis coupling with m5 + m6, in turn exhibiting a predominant a-type structure. Several interactions connecting these levels and the dark state 3m6 have been assessed. The whole data set is treated using Watson’s Areduced Hamiltonian in the Ir representation implemented with first order a- and b- and c-type Coriolis terms. A detailed analysis of the rotational structure yields a set of accurate upper-state parameters up to quartic distortion terms for m9 and m5 + m6. In addition, spectroscopic information about the dark ternary overtone of m6 has been obtained.

KW - Bromofluoromethane

KW - High-resolution FTIR spectroscopy

KW - Molecular constants

KW - Coriolis interactions

U2 - 10.1016/j.jms.2011.07.006

DO - 10.1016/j.jms.2011.07.006

M3 - Journal article

SN - 0022-2852

VL - 269

SP - 226

EP - 230

JO - Journal of Molecular Spectroscopy

JF - Journal of Molecular Spectroscopy

ER -