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Thermal decomposition of FOX-7 studied by ab initio molecular dynamics simulations

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Abstract

Ab initio molecular dynamics simulations were conducted to study the thermal decomposition mechanisms of solid FOX-7. We found that the initial decomposition of FOX-7 has three main reaction routes. The C–NO2 bond fission as reported previously is indeed the most common route. However, the inter- and intramolecular hydrogen transfers are also found to be valid, which is contradictory to previous energy minimization calculation results. The simulations agree well with known experimental data in terms of activation energy and reaction side products. A complete reaction network that describes how the main products, H2O, CO2 and N2 form in FOX-7 decomposition, is constructed from the simulation trajectories.

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Acknowledgments

This work was funded in part by the National Science Foundation of China (#21073119, #21173146) and National Basic Research Program (#2014CB239702).

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Correspondence to Huai Sun.

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Dedicated to Professor Guosen Yan and published as part of the special collection of articles celebrating his 85th birthday.

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Liu, Y., Li, F. & Sun, H. Thermal decomposition of FOX-7 studied by ab initio molecular dynamics simulations. Theor Chem Acc 133, 1567 (2014). https://doi.org/10.1007/s00214-014-1567-5

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  • DOI: https://doi.org/10.1007/s00214-014-1567-5

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