The discovery ot the thioformyl radical (HCS) was reported in 2018 by
Agúndez and co-workers toward
L483, a dark cloud
with an embedded Class 0 protostar. The observations were made with the
IRAM 30m telescope.
The detection was based on rotational data measured and analyzed by
Habara et al.
One possible formation pathway to HCS is the reaction between C atoms and hydrogen sulfide (H2S), which
has been shown to be efficient by both
HCS is a radical of thioformaldehyde (H2CS), which was detected in
1973. The HCS+ cation has also been
The isomer HSC was
also detected toward L483. These species are sulfur-containing versions of detected oxygen-bearing
formyl radial (HCO), and its