6533b860fe1ef96bd12c30f8

RESEARCH PRODUCT

Rare isotopic species of hydrogen sulfide: the rotational spectrum of H236S

Gabriele CazzoliJürgen GaussCristina Puzzarini

subject

Physicsmolecular dataHydrogen sulfideAnalytical chemistrymethods: laboratory: molecularAstronomy and AstrophysicsISM: moleculeAstrophysicschemistry.chemical_compoundchemistrySpace and Planetary ScienceRotational spectrumsubmillimeter: ISMIsotopologuemethods: data analysitechniques: spectroscopic

description

The rotational spectrum of the 36 S-bearing isotopologue of hydrogen sulfide (H2S) has been investigated for the first time in the 167 GHz−1.6 THz frequency range, thus providing an accurate and reliable set of spectroscopic parameters. The experimental investigation was backed up by state-of-the-art quantum-chemical calculations, which also allowed us to demonstrate the incorrectness of the previously reported spectroscopic constants. The present results are of suitable accuracy to attempt the astrophysical detection of the isotopic species under consideration. Finally, reliable predictions for the spectroscopic constants of other rare isotopologues of H2S, namely the mono- and bi-deuterated species containing 33 Sa nd 34 S, are provided.

https://doi.org/10.1051/0004-6361/201323298