nu. /sub 2/ +. nu. /sub 4/ band of /sup 12/CF/sub 4/
Journal Article
·
· J. Mol. Spectrosc.; (United States)
From a high-resolution diode laser spectrum of cooled /sup 12/CF/sub 4/, line assignments in ..nu../sub 2/ + ..nu../sub 4/ at 1066.4 cm/sup -1/ have been made for tetrahedral subspecies to J = 20, and in many cases to higher J. Spectroscopic constants have been obtained from a least-squares fit of the Hamiltonian, and the relative intensities of the assigned lines have been calculated. The ground- and excited-state rotational constants, Coriolis constant, and splitting of the F/sub 1/ and F/sub 2/ vibrational substates have the values B/sub 0/ = 0.191688 +- 0.000020 cm/sup -1/, B = 0.191442 +- 0.000020 cm/sup -1/, zeta/sub 4/ = 0.3605 +- 0.0002, ..delta.. = 0.5757 +- 0.0017 cm/sup -1/. The C-F bond length in the ground vibrational state is thus r/sub 0/ = 1.31752 +- 0.00007A. The analysis of a combination band such as this provides a method of obtaining ground-state spectroscopic constants of spherical-top molecules directly from the infrared spectrum, without the necessity of measuring weak forbidden transitions. The assignments allow accurate predictions of the frequencies emitted by the CO/sub 2/-pumped CF/sub 4/ laser.
- Research Organization:
- Los Alamos Scientific Lab., NM
- OSTI ID:
- 6157254
- Journal Information:
- J. Mol. Spectrosc.; (United States), Journal Name: J. Mol. Spectrosc.; (United States) Vol. 80; ISSN JMOSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Conference
·
Sun Dec 31 23:00:00 EST 1978
· SPIE Semin. Proc.; (United States)
·
OSTI ID:6610496
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Journal Article
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· J. Mol. Spectrosc.; (United States)
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400302 -- Organic Chemistry-- Isotope Effects-- (-1987)
CARBON 12
CARBON ISOTOPES
CARBON TETRAFLUORIDE
DATA
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
ISOTOPE EFFECTS
ISOTOPES
LASER SPECTROSCOPY
LIGHT NUCLEI
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SPECTRA
SPECTROSCOPY
STABLE ISOTOPES
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400302 -- Organic Chemistry-- Isotope Effects-- (-1987)
CARBON 12
CARBON ISOTOPES
CARBON TETRAFLUORIDE
DATA
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
ISOTOPE EFFECTS
ISOTOPES
LASER SPECTROSCOPY
LIGHT NUCLEI
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SPECTRA
SPECTROSCOPY
STABLE ISOTOPES