Carbonyl sulfide (OCS) was initially reported by
Jefferts et al. in 1971.
The first detection was made via a single rotational line observed in
Sgr B2. A second, confirming line was
reported several years later, by
Akabane et al.
By 1981, OCS had
been observed in ten interstellar and circumstellar sources by means of seven different rotational lines.
The first extragalatic detection was reported by
Mauersberger et al. in
NGC 253. Finally, OCS has been found in
the solar system in
and in several comets, beginning with
It is produced
naturally on Earth from "volcanoes,
marshes, soils, and deciduous and coniferous trees."
OCS is also
of the comparably small number of molecules that have been
observed in interstellar ices.
While the bonding in
carbonyl sulfide is
similar to that of carbon dioxide, it has a