Environmentally acceptable alternatives to toxic lead-based primary explosives are becoming increasingly important for energetic materials. In this study, potassium 4,4′-bis(dinitromethyl)-3,3′-azofurazanate, comprising two dinitromethyl groups and an azofurazan moiety, was synthesized and isolated as a new energetic 3D metal-organic framework (MOF). Several attractive properties, including a density of 2.039 g cm-3, a decomposition temperature of 229°C, a detonation velocity of 8138 m s-1, a detonation pressure of 30.1 GPa, an impact sensitivity of 2 J, and friction sensitivity of 20 N make 4 a good candidate as a green primary explosive.
Bibliographical noteFunding Information:
This work was supported by the Office of Naval Research (N00014-12-1-0536) and the Defense Threat Reduction Agency (HDTRA 1-11-1-0034).
- X-ray diffraction
- detonation properties
- energetic materials
- metal-organic frameworks
- primary explosives