June 2019

Hydropersulfide Radical

The detection of the radical species S2H was reported in 2017 by Fuente et al. toward the Horsehead nebula, one of the best known and most imaged deep space objects. The observations were made with the IRAM 30m telescope (one of the most prolific tools for detecting new astromolecules). A total of 8 lines were assigned to S2H.

S2H, also given as HS2 or HSS, is the radical of H2S2 or (di)hydrogen disulfide, also known as hydrogen persulfide. While H2S2 has not been detected to date, the oxygen analogs have both been observed: the detections of hydrogen peroxide (H2O2) and the hydroperoxyl radical (HO2) were reported in 2011 and 2012, respectively. In the absence of a common name, "hydropersulfide radical" might be an appropriate label for HS2, to be consistent with HO2.

Researcher Links
A Fuente
J Goicoechea
J Pety
R Le Gal
R Martín-Doménech
P Gratier
V Guzmán
E Roueff
JC Loison
G Muñoz-Caro
V Wakelam
M Gerin
P Riviere-Marichalar
THG Vidal

The Astrochymist homepage
Maintained by DE Woon