A family of 3,6-dinitropyrazolo[4,3-c]pyrazole-based energetic compounds was synthesized by using versatile N-functionalization strategies. Subsequently, nine ionic derivatives of the N,N′-(3,6-dinitropyrazolo[4,3-c]pyrazole-1,4-diyl)dinitramidate anion were prepared by acid-base reactions and fully characterized by infrared, multinuclear NMR spectra, and elemental analysis. The structures of four of these compounds were further confirmed by single-crystal X-ray diffraction. Based on their different physical and detonation properties, these compounds exhibit promising potential as modern energetic materials and can be variously classified as green primary explosives, high-performance secondary explosives, fuel-rich propellants, and propellant oxidizers.
Bibliographical noteFunding Information:
Financial support of the Office of Naval Research (N00014-16-1-2089), the Defense Threat Reduction Agency (HDTRA 1-15-1-0028), the CFD Research Corporation, and the M. J. Murdock Charitable Trust (No. 2014120:MNL:11/20/2014) for funds supporting the purchase of a 500 MHz NMR spectrometer is greatly acknowledged. J. Zhang (ID No.P15349) acknowledges the Japan Society for the Promotion of Science (JSPS) for a JSPS research fellowship.
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- energetic materials
- fused heterocycle