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• W2905962933 abstract "Abstract Nitramine explosives can combine relative insensitivity to initiation and great energy content. In this work, based on a previous approach developed for nitroaromatic explosives, we propose four mathematical models to correlate impact sensitivity, given by the h 50 value, to molecular charge properties. Fourteen cyclic nitramines were studied using Density Functional Theory (DFT). Six molecules of the set have measured h 50 values, which were used to evaluate the sensitivity models. Converged DFT charge densities of the molecules were partitioned and analyzed according to the distributed multipole analysis (DMA) atom‐centered method. The sensitivity models were based on the DMA electric multipole values. The electron withdrawing role of the nitro group and the strong polarization of the charges of the nitrogen atom in the amine group were clearly identified. The influence of the electronic properties on the sensitivity of the explosives was characterized by including in the sensitivity models the charge values of the nitro or the nitramine groups and electron delocalization, the latter quantified by the DMA quadrupole values of the ring atoms. Inclusion of electron delocalization effects can improve the prediction of h 50 values for two out of the five strained‐ring nitramines in the set. The charge values of the nitramine groups are the most important molecular property affecting the impact sensitivity. The h 50 values of eight nitramine explosives of the set not available experimentally were computed." @default.
• W2905962933 created "2019-01-01" @default.
• W2905962933 creator A5024088063 @default.
• W2905962933 creator A5073970397 @default.
• W2905962933 date "2018-12-21" @default.
• W2905962933 modified "2023-10-16" @default.
• W2905962933 title "On the molecular origin of the sensitivity to impact of cyclic nitramines" @default.
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• W2905962933 doi "https://doi.org/10.1002/qua.25868" @default.
• W2905962933 hasPublicationYear "2018" @default.
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