Preparation of Primary Explosive by Self-assembly of Combustible and Oxidizing Agents under Acid

Abstract

In order to further explore the effect of ligands on the performance of primary explosives and gain a deeper understanding of the coordination mechanism, we designed furan-2-carbohydrazide (FRCA), a ligand, by using oxygen-containing heterocycles and carbohydrazide. Then, FRCA and Cu­(ClO4)2 were used to synthesize coordination compounds [Cu­(FRCA)2(H2O)­(ClO4)2]·CH3OH (ECCs-1·CH 3 OH) and Cu­(FRCA)2(H2O)­(ClO4)2 (ECCs-1). The structure of the ECCs-1 was confirmed by single-crystal X-ray diffraction, IR and EA characterization. Further experiments on ECCs-1 show that ECCs-1 has good thermal stability, but is sensitive to mechanical stimuli (impact sensitivity = IS = 8 J, friction sensitivity = FS = 20 N). The predicted value of the detonation parameter is D EXPLO 5 = 6.6 km s–1, P EXPLO 5 = 18.8 GPa, but the ignition test, laser test, and lead plate detonation experiment show that ECCs-1 has excellent detonation performance, which is very worthy of attention.

A novel energetic pyridine-2-carbohydrazide copper perchlorate complex: synthesis, cationic ligand structure and properties

“…The test results showed that the peak thermal decomposition temperature of ECCs-1 was 215.6 °C, which was higher than those of the previously reported [Cu(PZCA) 2 ](ClO 4 ) 2 , 25 [Cu-(HDMPZCA) 2 (ClO 4 ) 2 ](ClO 4 ) 2 ·2H 2 O, 26 and Cu(FRCA) 2 (H 2 O)(ClO 4 ) 2 . 27 The reason may be the low enthalpy of pyridine ring formation, which was more stable than other heterocyclic ligands. As shown in Fig.…”

Self-Assembly of Purines with Oxidants for the Development of Novel, Dense, Insensitive, and Thermally Stable Energetic Materials

“…They are an interesting class of HEDMs that are still receiving a lot of attention because of their potential and multipurpose applications . These energetic materials have many advantages such as easier synthesis routes, higher heat of formation, good thermal stability, easier modification, and lower vapor pressures . This procedure can greatly increase the number of available energetic materials.…”