S$_{6}$N$_{2}$O$_{15}$ — A Nitrogen‐Poor Sulfur Nitride Oxide, and the Anhydride of Nitrido‐ tris ‐Sulfuric Acid

Abstract

The reaction of hexachlorophosphazene, P$_3$N$_3$Cl$_6$, with SO$_3$ leads to the new sulfur nitride oxide S$_6$N$_2$O$_{15}$. The compound displays an extraordinarily low nitrogen content and exhibits a bicyclic cage structure according to the formulation N{S(O)$_2$O(O)$_2$S}$_3$N, with both nitrogen atoms in trigonal planar coordination of sulfur atoms. Interestingly, the new nitride oxide can be also seen as the anhydride of nitrido‐tris‐sulfuric acid, N(SO$_3$H)$_3$