The High-Resolution FTIR Spectrum of Jet-Cooled CH3CF2Cl

High-Resolution Infrared Study of the ν7, ν8, and ν15 Bands and Millimeter-Wave Investigation of the v8 = 1 State of CF2Cl–CH3

“…The 8 analysis for the 35 Cl species was significantly augmented by MMW data that could be gathered with the help of predictions by the infrared data. As far as comparison is possible, the present results are in reasonable agreement with those of a recent jet FTIR study (9), although we present much more detailed information which better accomplishes demands for retrieval of DFCE in the atmosphere with the help of significantly more accurate spectroscopic parameters. Since there are only very minor, purely local perturbations, the rovibrational parameters may be used, in combination with existing intensity data, to predict the mid-infrared spectrum of DFCE for retrieval by means of a data bank.…”

“…All recent experimental studies, in particular those of Ref. (9), which provide band contours related to rotational selection rules, and ab initio studies converge to a vibrational assignment as quoted in (9). This is reproduced in Table 1.…”

“…They were assigned with the help of predicted wavenumbers using the parameters of Ref. (9). No extended perturbations were revealed.…”

“…Recently the infrared spectrum of natural DFCE has been studied in the 700 -1300 cm Ϫ1 range with an unapodized resolution of 3.5 ϫ 10 Ϫ3 cm Ϫ1 using a jet (9). The rotational temperature was ca.…”

“…Ab initio calculations have moreover provided theoretical band intensities (7,9) which also have been measured both for individual bands (10,11) and for extended spectral regions (12,13) to assist the search for DFCE in the environment.…”