Gem-dinitromethyl-substituted Energetic Metal-Organic Framework based on 1,2,3-Triazole from in situ Controllable Synthesis.

Synthesizing energetic metal-organic frameworks at ambient temperature and pressure has been always a challenge in the research area of energetic materials. In this work, through in situ controllable synthesis, energetic metal-organic framework gem-dinitromethyl-substituted dipotassium 4,5-bis(dinitromethyl)-1,2,3-triazole with a "cage-like" crystal packing was obtained and characterized. Most importantly, for the first time, we found that it could be successfully afforded with a catalytic effect of trifluoroacetic acid. This new compound exhibited its high density (2.04 g cm ) at ambient temperature, superior detonation velocity (8715 m s ) to that of lead azide (5877 m s ) and comparable to that of RDX (8748 m s ). Its detonation products are mainly N (48.1 %), suggesting it is also a green energetic material. The above-mentioned performance indicates its potential applications in detonator devices as lead-free primary explosive.