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Hexasulfur

Hexasulfur
Ball and stick model of hexathiane
Names
Systematic IUPAC name
  • Cyclohexasulfane
  • cyclo-Hexasulfur
  • Hexathiane[1]
Other names
Hexasulfur
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/S6/c1-2-4-6-5-3-1 checkY
    Key: FEXCMMPRRBSCRG-UHFFFAOYSA-N checkY
  • S1SSSSS1
Properties
S6
Molar mass 192.36 g·mol−1
Appearance Vivid, orange, opaque crystals
Related compounds
Related compounds
 Octasulfur
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Hexasulfur is an inorganic chemical with the chemical formula S6. This allotrope was first prepared by M. R. Engel in 1891 by treating thiosulfate with HCl.[2] Cyclo-S6 is orange-red and forms a rhombohedral crystal.[3] It is called ρ-sulfur, ε-sulfur, Engel's sulfur and Aten's sulfur.[4] Another method of preparation involves the reaction of a polysulfane with sulfur monochloride:[3]

H2S4 + S2Cl2 → cyclo-S6 + 2 HCl (dilute solution in diethyl ether)
  1. ^ "S6 - PubChem Public Chemical Database". The PubChem Project. USA: National Center for Biotechnology Information.
  2. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 655. ISBN 978-0-08-037941-8.
  3. ^ a b Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 656. ISBN 978-0-08-037941-8.
  4. ^ Theilig, Eilene (1982). A primer on sulfur for the planetary geologist. NASA Contractor Report 3594, Grant NAGW-132, Office of Space Science and Applications, Washington, DC, USA: National Aeronautics and Space Administration, Scientific and Technical Information Branch. p. 4.

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