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Ammonia-(Dinitramido)boranes: High-Energy-Density Materials
Guillaume Bélanger-Chabot1, Martin Rahm2, Ralf Haiges1
1Loker Hydrocarbon Research Institute, Department of Chemistry, University of Southern California, Los Angeles, CA 90089-1661 (USA).
Angewandte Chemie (International Ed. in English)
|August 16, 2015
Summary
Researchers synthesized novel ammonia-(dinitramido)boranes, the first of their kind. These high-energy-density materials show promise as rocket propellants and explosives, despite thermal stability limitations.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Energetic Materials
Background:
- Development of novel high-energy-density materials (HEDMs) is crucial for advanced propulsion and ordnance applications.
- Borane complexes offer unique structural and energetic properties for HEDM research.
Purpose of the Study:
- To synthesize and characterize new (dinitramido)borane compounds.
- To evaluate the energetic performance and potential applications of these novel materials.
Main Methods:
- Synthesis via reaction of dinitroamine with ammonia-borane.
- Structural elucidation using X-ray crystallography.
- Characterization through vibrational and multinuclear NMR spectroscopy.
Main Results:
- Successfully synthesized two ammonia-(dinitramido)boranes, including ammonia-mono(dinitramido)borane.
- Ammonia-mono(dinitramido)borane is an oxygen-balanced HEDM with predicted specific impulse of 333 s for solid rocket propellant.
- Predicted explosive performance comparable to PETN and superior to TNT; ammoniabis(dinitramido)borane also detected.
Conclusions:
- First report of (dinitramido)borane compounds, expanding the library of energetic materials.
- Ammonia-mono(dinitramido)borane exhibits high theoretical performance but requires further research for thermal stability enhancement.
- These findings open new avenues for designing advanced energetic materials based on borane chemistry.
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