Heptasulfur imide explained

Heptasulfur imide is the inorganic compound with the formula . It is a pale yellow solid that is, like elemental sulfur, highly soluble in carbon disulfide. The compound, which is only of academic interest, is representative of a family of sulfur imides (or azacyclosulfanes or thiacycloazanes) .

Synthesis and structure

It is prepared by reaction of disulfur dichloride with ammonia,[1] although other methods have been developed.[2] Together with, the reaction also produces three isomers of (diazacyclooctasulfanes) and two isomers of (triazacyclooctasulfanes).

Azacyclooctasulfane is an analogue of octasulfur (cyclooctasulfane), with one replaced by . The center is almost planar,[3] suggesting that the amine is nonbasic.

References

  1. Becke-Goehring, Margot; Fluck, Ekkehard "Heptasulfur imide" Inorganic Syntheses 1966, vol. 8, 103-5.
  2. Bojes, J.; Chivers, T.; Drummond, I. "Heptathiazocine(heptasulfurimide) and tetrabutylammonium tetrathionitrate" Inorganic Syntheses (1978), 18, 203-6.
  3. Hecht, H. J.; Reinhardt, R.; Steudel, R.; Bradaczek, H. "Redetermination of the crystal and molecular structure of heptasulfur imide, S7NH" Zeitschrift für Anorganische und Allgemeine Chemie 1976, vol. 426, pp. 43-8.