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- W2000540371 abstract "The two triad systems of hydrogen sulfide (2ν2, ν1, and ν3near 4 μm and 3ν2, ν1+ ν2, and ν2+ ν3near 2.7 μm) were analyzed using 14 spectra recorded at 0.0056 and 0.011 cm−1resolution with the McMath Fourier transform spectrometer located at Kitt Peak National Observatory. Experimental upper state levels of H232S, H234S, and H233S were obtained from assigned positions (as high asJ= 20 andKa= 15 for the main isotope). These were fitted to the A-reduced Watson Hamiltonian to determine precise sets of rotational constants throughJ10and up to nine Fermi and Coriolis coupling parameters. Intensities of the two H232S triads were modeled with rms values of 2.5%, using the transformed transition moment expansion with 19 terms for 568 intensities of the first triad and 11 terms for the 526 intensities of the second triad. The second derivatives of the dipole moment with respect to normal coordinates were estimated in Debye to be:22μx= −0.004873 (90);12μx= 0.01372 (30); and23μz= 0.01578 (30). This confirmed that for hydrogen sulfide some of the second derivatives are larger than the first derivatives. The calculated line intensities were summed yielding integrated band strengths (in cm−2/atm at 296 K) as follows: 0.3315 for 2ν2, 0.4522 for ν1, 0.1201 for ν3, 0.0303 for 3ν2, 1.820 for ν1+ ν2, and 2.869 for ν2+ ν3. In addition, the hot band transitions were identified in both regions. Finally, a composite database of hydrogen sulfide line parameters was predicted for the 5- to 2.5-μm region." @default.
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- W2000540371 date "1998-04-01" @default.
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- W2000540371 title "The Absorption Spectrum of H2S Between 2150 and 4260 cm−1: Analysis of the Positions and Intensities in the First (2ν2, ν1, and ν3) and Second (3ν2, ν1+ ν2, and ν2+ ν3) Triad Regions" @default.
- W2000540371 doi "https://doi.org/10.1006/jmsp.1997.7501" @default.
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