Combining potassium with positive oxygen-balanced polynitropyrazole: a promising way to develop green primary explosives

Autor:	Xiya Zhang, Haifeng Huang, Jun Yang, Xiangyang Lin, Benyue Guo
Rok vydání:	2021
Předmět:	Potassium Infrared spectroscopy chemistry.chemical_element General Chemistry Nuclear magnetic resonance spectroscopy Pyrazole Oxygen balance Catalysis chemistry.chemical_compound Differential scanning calorimetry chemistry Materials Chemistry Thermal stability Single crystal Nuclear chemistry
Zdroj:	New Journal of Chemistry. 45:20426-20431
ISSN:	1369-9261 1144-0546
DOI:	10.1039/d1nj04452d
Popis:	Combining potassium and a nitrogen-rich heterocycle with a positive oxygen balance is an efficient strategy to develop new lead-free green primary explosives. In this study, we successfully synthesized dipotassium 3,5-dinitro-4-nitramino-1-(dinitromethyl)pyrazole (6) and monopotassium 3,5-dinitro-4-nitramino-1-(dinitromethyl)pyrazole (8·2H2O). These compounds were characterized by IR spectroscopy, elemental analysis, NMR spectroscopy, differential scanning calorimetry (DSC), and single crystal X-ray diffraction. Compound 6 has attractive properties, including positive oxygen balance (ΩCO = 24.1%, ΩCO2 = 4.0%), high density (2.068 g cm−3), good thermal stability (Td = 270 °C), superior detonation properties (D = 7572 m s−1, P = 27.54 GPa), and appropriate sensitivity for primary explosives (FS = 42 N, IS = 0.25 J). The superior properties of compound 6 make it a competitive replacement as a green primary explosive.
Databáze:	OpenAIRE
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