Hexasulfur

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)
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
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