Improving the stability of hydrazinium pentazolate through cocrystallization

Abstract

An energetic cocrystal of hydrazinium cyclo-pentazolate and pyrazine-1,4-dioxide (2 : 1), N₂H₅N₅/PDO, was synthesized. The cocrystal, as characterized by single-crystal X-ray diffraction, IR and Raman spectroscopy, XRD, and elemental analysis, has a higher density, lower sensitivity and lower hygroscopicity than N₂H₅N₅. Moreover, the calculated detonation velocity of N₂H₅N₅/PDO (8.735 km s⁻¹) is comparable to that of RDX, and it is an improved high-performance energetic material.