### Abstract

The high resolution infrared spectra of hydrogen sulfide H_{2} ^{32}S were recorded with a Bruker IFS 125HR Fourier transform infrared spectrometer (Zürich prototype ZP2001) and analyzed in the region of 5650–6660 cm^{−1} where six interacting bands (2ν_{1}+ν_{2}, ν_{1}+ν_{2}+ν_{3}, ν_{1}+3ν_{2}, 3ν_{2}+ν_{3}, 5ν_{2} and ν_{2}+2ν_{3}) of the second hexade are located. 2452 transitions with maximum values of the quantum numbers J^{max} = 18/19/13/14/14/11 and K_{a} ^{max} = 10/11/8/11/7/5 were assigned in the experimental spectra to the 2ν_{1}+ν_{2}, ν_{1}+ν_{2}+ν_{3}, ν_{1}+3ν_{2}, 3ν_{2}+ν_{3}, 5ν_{2} and ν_{2}+2ν_{3} bands. On this basis, 194/216/108/104/90/9 upper ro–vibrational energies (more than 1.4 times higher number of both transitions and upper energy values compared to the preceding studies) were obtained for the upper vibrational states (210), (111), (130), (031), (050) and (012). These data were used in the weighted fit of the Watson Hamiltonian parameters. The 172 parameters obtained from the fit reproduce the 721 initial energy values of six vibrational states (2452 transitions) with the root mean square deviation d_{rms}=7.1×10^{−4} cm^{−1}. The 534 transitions belonging to the 2ν_{1}+ν_{2} and ν_{1}+ν_{2}+ν_{3} bands of H_{2} ^{34}S (197 upper energy values; about 1.5 times higher number for the ν_{1}+ν_{2}+ν_{3} band and more than two times higher number for the 2ν_{1}+ν_{2} band) were recorded and analysed. For the first time, 177 transitions (70 upper energy values) were assigned to the ν_{1}+ν_{2}+ν_{3} band of H_{2} ^{33}S.

Original language | English |
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Article number | 106710 |

Journal | Journal of Quantitative Spectroscopy and Radiative Transfer |

Volume | 240 |

DOIs | |

Publication status | Published - Jan 2020 |

### Keywords

- H S, H S isotopologues of hydrogen sulfide
- Ro-vibration spectra of HS in the second hexad
- Spectroscopic parameters

### ASJC Scopus subject areas

- Radiation
- Atomic and Molecular Physics, and Optics
- Spectroscopy

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## Cite this

_{2}

^{M}S (M=32,33,34).

*Journal of Quantitative Spectroscopy and Radiative Transfer*,

*240*, [106710]. https://doi.org/10.1016/j.jqsrt.2019.106710