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Dimethylnitramine (DMN) is usually investigated as a model compound for nitramine explosives. In the present study, the reaction of DMN with NO2 molecule and two possible initial channels of unimolecular decomposition of DMN in gas-phase (N-N bond scission and direct HONO elimination) were studied. Critical points on the potential energy surfaces (PES) of all reactions were optimized using the B3LYP...
By using DFT method, changing the six parameters of TATB cell and calculating the total energy corresponding to different volume ratio, this paper concludes that TATB crystal can only extend irreversibly along the c-axis when heated because the point of experiment is unstable thermodynamically and the ratio of non-reversible expansion must be about 2.6-3.7 per cent theoretically.
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