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- W2016174811 abstract "Abstract The pure rotational spectrum of the reactive molecule selenonyl fluoride, SeO 2 F 2 , has been observed for the first time. We have measured R -branch transitions for five isotopic species of SeO 2 F 2 in the 16–80 GHz frequency range. Analyses of these data yielded values for the rotational constants and quartic centrifugal distortion constants for all five species. Each species is an oblate symmetric rotor whose dipole moment is directed along the a -inertial axis. From an analysis of the Stark shift data the molecular dipole moment has been evaluated as 0.593(9) D. Values obtained for the quartic distortion constants have been combined with existing vibrational data to determine partially the harmonic force field of the SeO 2 F 2 molecule. The ground state effective and ground state average molecular geometries have been calculated, as has the substitution coordinate of the selenium atom and an approximate equilibrium structure. Our microwave results demonstrate clearly that the molecule has C 2 v symmetry. The ground state average structural parameters of SeO 2 F 2 are: r z (SeO) = 1.5748(9) A, r z (SeF) = 1.6904(9) A,[formula](OSeO) = 126.47(10)°, and[formula](FSeF) = 93.72(4)°." @default.
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- W2016174811 date "1995-12-01" @default.
- W2016174811 modified "2023-09-27" @default.
- W2016174811 title "The Microwave Spectrum, Dipole Moment, Molecular Structure, and Harmonic Force Field of Selenonyl Fluoride, SeO2F2" @default.
- W2016174811 doi "https://doi.org/10.1006/jmsp.1995.0016" @default.
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