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Updated: Jun 10, 2026
10:33
Research and Development of High-performance Explosives
Published on: February 20, 2016
Pyrrole-Derived Zwitterionic Primary Explosive: A Safer Alternative to Diazodinitrophenol (DDNP)
V Shanmugapriya1, Pradeepta K Panda1
1School of Chemistry, University of Hyderabad, Hyderabad 500046, India.
Organic Letters
|June 9, 2026
Summary
A new energetic material, 3-diazo-2,4-dinitropyrrole (DDNPy), shows high thermal stability and detonation performance. This metal-free compound is a promising candidate for environmentally benign primary explosives.
Area of Science:
- Materials Science
- Chemistry
- Energetic Materials
Background:
- Primary explosives are crucial for initiating detonation.
- There is a need for metal-free, environmentally benign alternatives to traditional primary explosives.
- Pyrrole-based compounds offer potential for novel energetic material development.
Purpose of the Study:
- To synthesize and characterize a novel pyrrole-based zwitterionic energetic material.
- To evaluate the thermal stability, detonation performance, and sensitivity of the new compound.
- To assess its potential as a next-generation primary explosive.
Main Methods:
- Synthesis via an efficient nitration-amination-diazotization sequence.
- Thermal stability analysis (Td = 190 °C).
- Detonation performance evaluation (Dv = 7.94 km s-1; Dp = 27.2 GPa).
- Crystallographic and Hirshfeld analyses for lattice structure and bonding.
- Sensitivity assessment.
Main Results:
- Successful synthesis of 3-diazo-2,4-dinitropyrrole (DDNPy).
- DDNPy exhibits high thermal stability (Td = 190 °C).
- Superior detonation performance (Dv = 7.94 km s-1; Dp = 27.2 GPa).
- Crystallographic and Hirshfeld analyses indicate a compact, strongly bound lattice with balanced sensitivities.
Conclusions:
- DDNPy is a highly promising metal-free energetic material.
- Its properties make it suitable for environmentally benign next-generation primary explosives.
- The zwitterionic nature contributes to its stability and performance.
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