Synthesis and Characterization of Hydrazinium Azide Hydrazinate

Hydrazinium azide hydrazinate, N₂H₅]⁺N₃]⁻ċN₂H₄ was synthesized from equimolar amounts of hydrazinium azide and hydrazine and characterized by single crystal X‐ray diffraction: monoclinic, P 2₁/c, a=6.3704(2), b=12.1111(4), c=6.9940(2) Å, β=91.8666(2) °, V=539.32(3) ų, Z=4, ρ=1.320 g cm⁻¹. The compound is less hygroscopic and less volatile than hydrazinium azide. Explosion of N₂H₅]⁺N₃]⁻ċN₂H₄ yielded dinitrogen (N₂), ammonia (NH₃) and dihydrogen (H₂). Compared to hydrazinium azide, the hydrazine adduct produces larger amounts of ammonia in the explosion.