Hexasulfur

Hexasulfur
Names
Systematic IUPAC name
  • Cyclohexasulfane
  • cyclo-Hexasulfur
  • Hexathiane
Other names
Hexasulfur
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/S6/c1-2-4-6-5-3-1 Y
    Key: FEXCMMPRRBSCRG-UHFFFAOYSA-N Y
  • 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).
Infobox references

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. Cyclo-S6 is orange-red and forms a rhombohedral crystal. It is called ρ-sulfur, ε-sulfur, Engel's sulfur and Aten's sulfur. Another method of preparation involves the reaction of a polysulfane with sulfur monochloride:

H2S4 + S2Cl2 → cyclo-S6 + 2 HCl (dilute solution in diethyl ether)
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