This paper presents the analysis of the spectra of SiDF 3 in its vibrational ground and v 4 ϭ 1 states. The pure rotational spectrum of the ground state was measured up to 903 GHz ( JЉ ϭ 65). Rotational, quartic, and sextic centrifugal distortion constants were accurately determined. Furthermore the
Rovibrational Spectroscopy of the v5 = 1 Level of 28SiDF3
✍ Scribed by P. Pracna; L. Margulès; J. Cosléou; J. Demaison; E.B. Mkadmi; H. Bürger
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 95 KB
- Volume
- 199
- Category
- Article
- ISSN
- 0022-2852
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✦ Synopsis
The 5 fundamental band of trifluorosilane-d (SiDF 3 ) at 627 cm Ϫ1 was studied for the first time by high-resolution FTIR spectroscopy at a resolution of 2.4 ϫ 10 Ϫ3 cm Ϫ1 . The analysis was performed simultaneously with available microwave and newly measured submillimeter-wave data in the approximation of an isolated degenerate fundamental level of a C 3v symmetric top molecule leading to a standard deviation of 0.22 ϫ 10 Ϫ3 cm Ϫ1 for the reproduction of the infrared wavenumbers, 36 kHz for the microwave, and 198 kHz for the submillimeter-wave frequencies, respectively. The unitary equivalence between the two reductions (Q and D) of the effective Hamiltonian applied in the analysis is demonstrated.
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This paper deals with the first study of high-resolution radio-frequency, centimeter-wave, millimeter-wave, and infrared spectra of the deuterated isotopomer of trifluorosilane, SiDF 3 , in its lowest degenerate excited v 6 ϭ 1 state. Following the work of E. I.