5-Azido-3,3-dimeth­yl-2-oxo-1-thia-4,6-diaza­indan 1,1-dioxide

In the title mol­ecule, C₇H₇N₅O₃S, all of the atoms in the fused ring system, except for the O atom, are essentially in the same plane. The O atom forms the flap of the envelope conformation of the sultone ring. In the absence of any hydrogen-bond or π–π stacking inter­actions, the structure appears to be stabilized only by normal van der Waals inter­actions.