Author： Wang W.F. Tan T.L. Ong P.P.
Publisher： Academic Press
ISSN： 0022-2852
Source： Journal of Molecular Spectroscopy, Vol.181, Iss.1, 1997-01, pp. : 11-17
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Abstract
The high-resolution FTIR spectrum of CF 2 =CH 2 was measured and analyzed in the Fermi interacting nu 2 and nu 8 + nu 10 bands around 1735 cm -1 . Both bands have strong infrared absorption with an A -type appearance. Watson's A -reduced Hamiltonian in the I r representation was employed in the computation of the energy levels, taking into account the Fermi resonance contribution. A total of 2119 nu 2 transitions and 2056 nu 8 + nu 10 transitions were eventually assigned with a rms deviation of 0.00075 cm -1 . In a nonlinear least-squares fit, accurate rovibrational constants of the upper states were determined with the band origins nu 2 = 1728.49829 ± 0.00005 cm -1 and nu 8 + nu 10 = 1741.50207 ± 0.00004 cm -1 . Finally, a set of equilibrium rotational constants of CF 2 =CH 2 were derived.
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