Balancing Excellent Performance and High Thermal Stability in a Dinitropyrazole Fused 1,2,3,4-Tetrazine

The
key to successfully designing high-performance and insensitive
energetic compounds for practical applications is through adjusting
the molecular organization including both fuel and oxidizer. Now a
superior hydrogen-free 5/6/5 fused ring energetic material, 1,2,9,10-tetranitrodipyrazolo­[1,5-d:5′,1′-f]­[1,2,3,4]­tetrazine
(6) obtained from 4,4′,5,5′-tetranitro-2H,2′H-3,3′-bipyrazole (4) by N-amination and N-azo coupling reactions is described.
The structures of 5 and 6 were confirmed
by single crystal X-ray diffraction measurements. Compound 6 has a remarkable room temperature experimental density of 1.955
g cm–3 and shows excellent detonation performance.
In addition, it has a high decomposition temperature of 233 °C.
These fascinating properties, which are comparable to those of CL-20,
make it very attractive in high performance applications.