Taming of 3,4-Di(nitramino)furazan

Highly
energetic 3,4-di­(nitramino)­furazan (1, DNAF)
was synthesized and confirmed structurally by using single-crystal
X-ray diffraction. Its highly sensitive nature can be attributed to
the shortage of hydrogen-bonding interactions and an interactive nitro
chain in the crystal structure. In order to stabilize this structure,
a series of corresponding nitrogen-rich salts (3–10) has been prepared and fully characterized. Among these
energetic materials, dihydrazinium 3,4-dinitraminofurazanate (5) exhibits a very promising detonation performance (νD = 9849 m s–1; P = 40.9 GPa) and is one of the most powerful explosives to date.
To ensure the practical applications of 5, rather than
preparing the salts of 1 through acid-base reactions,
an alternative route through the nitration of N-ethoxycarbonyl-protected
3,4-diaminofurazan and aqueous alkaline workup was developed.