Work

Construction of high energy density azasydnone-pyrazole compounds

Year: 2025

Type: article

Abstract: The search for advanced energetic materials has shifted beyond traditional groups like nitro to explore non-conventional explosophores. Among these, the azasydnone ring stands out, combining a zero-oxygen balance with high-energy bonds (N-N, N-O, N=N) for stable energy storage. Here, we report the introduction of azasydnone rings at different positions of dinitropyrazole. Although they have the same substituent group, the change of the position of the azasydone ring makes the two compounds show great differences in crystal density (4-azasydnone-3,5-dinitropyrazole 1.830 g·cm −3 , 5-azasydnone-3,4-dinitropyrazole 1.981 g·cm −3 ). Molecular structures are confirmed by 1 H and 13 C NMR, IR spectroscopy, and X-ray crystal diffraction. This serves as an example of the ability to construction of high-density azasydnone compounds.

Source: Energetic Materials Frontiers

DOI: 10.1016/j.enmf.2025.12.005

Authors: Wen-jin Zhang, Yu-xin Xue, He Huang, Cheng-hui Sun

Institution: Beijing Institute of Technology

Language: English

Topic: Energetic Materials and Combustion

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, Beijing Institute of Technology

Awards: G3348960155, G4652397638