text: Many S-N compounds are prepared from . Reaction with piperidine generates :
  A related cation is also known, i.e. .
  Treatment with tetramethylammonium azide produces the heterocycle :
  Cyclo- has 10 pi-electrons.
  In a related reaction, the use of the bis(triphenylphosphine)iminium azide gives a salt containing the blue  anion:
  The anion  has a chain structure described using the resonance .
   reacts with electron-poor alkynes.
  Chlorination of  gives thiazyl chloride.
  Passing gaseous  over silver metal yields the low temperature superconductor polythiazyl or polysulfurnitride (transition temperature (0.26±0.03) K), often simply called "(SN)". In the conversion, the silver first becomes sulfided, and the resulting silver sulfide| catalyzes the conversion of the  into the four-membered ring , which readily polymerizes.