text: serves as a Lewis base by binding through nitrogen to strongly Lewis acidic compounds such as Antimony pentachloride| and Sulfur trioxide|. The cage is distorted in these adducts.
  The reaction of  with  is reported to form a complex where a sulfur forms a dative bond to the metal. This compound upon standing is isomerised to a complex in which a nitrogen atom forms the additional bond to the metal centre.
  It is protonated by Tetrafluoroboric acid| to form a tetrafluoroborate salt:
  The soft Lewis acid CuCl forms a coordination polymer:
  Dilute NaOH hydrolyzes  as follows, yielding thiosulfate and trithionate:
  More concentrated base yields sulfite: