Two groups are credited with the first observations of tricarbon monosulfide (C3S) in 1987.
Using new laboratory data, Yamamoto et al.
identified three unknown lines in observations of
Kaifu et al. captured with the
45 m telescope at the
Nobeyama Radio Observatory.
Cernicharo et al. observed 11 lines of C3S in
IRC +10216 with the
IRAM 30 m telescope. The detection in IRC +10216
was confirmed in 1993 by Bell et al.
Tercero et al. reported the first detection of
C3S in a warm cloud,
Orion KL, in 2010.
Tricarbon monosulfide and
dicarbon monosulfide (C2S) are the only
thiocumulene compounds that have been detected to date,
although experimental measurements of rotational spectra have
made for compounds with up to nine carbon atoms.