S6 N2 O15 -A Nitrogen-Poor Sulfur Nitride Oxide, and the Anhydride of Nitrido-tris-Sulfuric Acid

Abstract

The reaction of hexachlorophosphazene, P₃ N₃ Cl₆ , with SO₃ leads to the new sulfur nitride oxide S₆ N₂ O₁₅ . 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(SO₃ H)₃ .

Keywords: Sulfur nitride oxide; molecular cages; sulfur trioxide; sulfuric acid derivatives.