Cyclooctasulfur monoxide

Cyclooctasulfur monoxide is an inorganic compound with a chemical formula S₈O, discovered in 1972. It is a type of sulfur oxide.[1]

Cyclooctasulfur monoxide

Names
Other names Octathiocane oxide
Identifiers
CAS Number	35788-51-3^Y
3D model (JSmol)	Interactive image
ChemSpider	30654016
PubChem CID	139186352
InChI InChI=1S/OS8/c1-9-7-5-3-2-4-6-8-9 Key: ZNJJQQGMZXVPNK-UHFFFAOYSA-N
SMILES O=S1SSSSSSS1
Properties
Chemical formula	S8O
Molar mass	272.52
Appearance	Yellowish sharp crystal[1]
Density	2.13 g·cm^−3
Solubility	0.8 g（Carbon disulfide）[1]
Structure[2]
Crystal structure	Orthorhombic
Space group	Pca21
Lattice constant	a = 13.197, b = 7.973, c = 8.096
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

A crystaline compound composed of cyclooctasulfur monoxide and antimony pentachloride in equimolar quantities can be made (S₈O•SbCl₅).[3]

References

1. Ralf Steudel, Michael Rebsch (April 1972). "Preparation of cyclo-Octasulfur Oxide, S₈O". Angewandte Chemie International Edition in English. 11 (4): 302–303. doi:10.1002/anie.197203021. ISSN 0570-0833. Retrieved 2019-11-01.
2. Steudel, Ralf; Luger, Peter; Bradaczek, Hans; Rebsch, Michael (May 1973). "Crystal and Molecular Structure of Cyclooctasulfur Oxide, S8O". Angewandte Chemie International Edition in English. 12 (5): 423–424. doi:10.1002/anie.197304231.
3. Steudel, Ralf; Sandow, Torsten; Steidel, Jürgen (1980). "Reversible isomerization of cyclo-octasulphur monoxide; preparation and X-ray crystal structure of S8O·SbCl5". J. Chem. Soc., Chem. Commun. (4): 180–181. doi:10.1039/C39800000180.