Sulfuryl diazide
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It was not until 2011 that sulfuryl diazide was isolated in a pure enough state to be fully characterized. It was characterized by infrared and Raman spectroscopy; its structure in the solid state was determined by x-ray crystallography. Its melting point is -15 °C. It was prepared by the reaction of sulfuryl chloride (SO2Cl2) with sodium azide (NaN3) using acetonitrile as solvent:
- SO2Cl2 + 2 NaN3 → SO2(N3)2 + 2 NaCl
Sulfuryl diazide has been used as a reagent to perform reactions that remove nitrogen from heterocyclic compounds:
- R1−NH−R2 + SO2(N3)2 → R1−R2 + SO2 + 2 N2 + HN3