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Updated: Jan 19, 2026
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Published on: December 29, 2016
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Predictions on High-Power Trivalent Metal Pentazolate Salts
Kang Xia1, Jianan Yuan1, Xianxu Zheng2
1National Laboratory of Solid State Microstructures, School of Physics and Collaborative Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210093 , China.
The Journal of Physical Chemistry Letters
|September 28, 2019
Summary
Researchers discovered novel metastable energetic trivalent metal pentazolate salts (MN15) with exceptionally high nitrogen content. These materials exhibit remarkable stability and high detonation properties, positioning them as promising green energetic materials.
Area of Science:
- Materials Science
- Chemistry
- Physics
Background:
- High-energy-density materials (HEDMs) are crucial for both scientific research and practical applications.
- The development of novel HEDMs with enhanced properties remains a key objective in energetic materials science.
Purpose of the Study:
- To predict and characterize a new series of metastable energetic trivalent metal pentazolate salts (MN15) using computational methods.
- To evaluate the energetic properties, stability, and potential applications of these novel compounds.
Main Methods:
- Employed molecular crystal structure search combined with first-principles calculations.
- Analyzed the structural, mechanical, and energetic properties of the predicted MN15 salts.
Main Results:
- Successfully predicted a series of MN15 salts (M=Al, Ga, Sc, Y) with high nitrogen content and energy density.
- These compounds exhibit wave-like stacking of pentazolate N5- anions, featuring a mix of covalent and non-covalent bonding.
- Demonstrated mechanical stability up to ~1000 K and ambient pressure.
- Calculated high detonation pressures (~80 GPa) and velocities (~12 km/s), surpassing those of conventional explosives like TNT and HMX.
Conclusions:
- The predicted MN15 salts represent a significant advancement in the field of energetic materials.
- Their superior energetic performance and stability make them highly promising candidates for next-generation high-brisance green energetic materials.
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