Qing Li, Yaqun Dong, Liqiong Luo, Yizhen Feng, Qiangqiang Liu, Yingle Liu, Ziwu Cai
This study reports the construction of pyrimidine-based [5,6,5]-fused tricyclic energetic frameworks. Compounds 10-12 exhibit high thermal stability (Td = 312-368 °C), excellent mechanical sensitivity (IS ≥ 30 J; FS > 360 N), and favorable detonation performance (Dv = 8192-8720 m s-1, 25.3-35.8 GPa), outperforming conventional heat-resistant explosive HNS. These results present a robust strategy for developing advanced heat-resistant explosives.