Infrared spectrum and potential constants of silicon tetrafluoride

Journal Article · Mon Nov 01 04:00:00 EST 1982 · J. Chem. Phys.; (United States)

OSTI ID:6695569

McDowell, R S; Reisfeld, M J; Patterson, C W; Krohn, B J; Vasquez, M C; Laguna, G A

Doppler-limited tunable diode laser spectra of ..nu../sub 4/ of /sup 28/SiF/sub 4/ have been analyzed and the spectroscopic constants determined. In contrast to most earlier low-resolution studies, the Coriolis constant zeta/sub 4/, when combined with zeta/sub 3/ as obtained from previous laser spectroscopy, yields a zeta sum that is within 5% of the expected harmonic value of 1/2. The band origins of 12 overtones and combinations have been obtained from Fourier-transform spectra (0.04 cm/sup -1/ resolution), resulting in estimates of the anharmonicity constants and harmonic frequencies. From the Coriolis constants and the isotope shifts in ..nu../sub 3/ we have redetermined the general quadratic force field of SiF/sub 4/.

• Research Organization: University of California, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 6695569
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 77:9; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
CORIOLIS FORCE
ELECTROMAGNETIC RADIATION
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFRARED SPECTRA
LASER RADIATION
LASER SPECTROSCOPY
MOLECULAR STRUCTURE
RADIATIONS
SILICON COMPOUNDS
SILICON FLUORIDES
SPECTRA
SPECTROSCOPY