Diode laser spectroscopy of the [nu][sub 8] band of chlorofluoromethane

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Journal of Molecular Spectroscopy; (United States)

DOI:https://doi.org/10.1006/jmsp.1994.1192· OSTI ID:7148128

Baldacci, A; Stoppa, P; Giorgianni, S; Visinoni, R; Ghersetti, S ^[1]

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1. Univ. di Venezia (Italy). Dipt. di Chimica Fisica

The infrared spectrum of the [nu][sub 8] band of natural CH[sub 2]FCl has been recorded at a resolution of about 0.002 cm[sup [minus]1] in the range 1,201--1,270 cm[sup [minus]1] using a tunable diode laser spectrometer. This vibration of symmetry species A[double prime] gives rise to a c-type band. The rovibrational analysis in the P, Q, and r branches led to the assignment of 1,932 and 542 transitions belonging to the [sup 35]Cl and [sup 37]Cl isotopomers, respectively. From a simultaneous fit of GSCD of this work and the [nu][sub 3] band, together with the literature microwave data, an improved set of ground sate constants up to the quartic terms has been obtained using Watson's A-reduction Hamiltonian in the I[sup r] representation. A least-squares fit of the identified transitions provided excited state parameters of the [nu][sub 8] band for both isotopic varieties with a standard deviation of about 6 [times] 10[sup [minus]4] cm[sup [minus]1].

• OSTI ID: 7148128
• Journal Information: Journal of Molecular Spectroscopy; (United States), Journal Name: Journal of Molecular Spectroscopy; (United States) Vol. 166:2; ISSN JMOSA3; ISSN 0022-2852
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
CHLORINE 35
CHLORINE ISOTOPES
ISOTOPES
LASER SPECTROSCOPY
LEAST SQUARE FIT
LIGHT NUCLEI
MAXIMUM-LIKELIHOOD FIT
NUCLEI
NUMERICAL SOLUTION
ODD-EVEN NUCLEI
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SPECTROSCOPY
STABLE ISOTOPES