Abstract
A novel polynitro cage compound 4,8,11,14,15-pentanitro-2,6,9,13-tetraoxa-4,8,11,14,15–pentaazaheptacyclo [5.5.1.13,11.15,9]pentadecane(PNTOPAHP) has been designed and investigated at the DFT-B3LYP/6-31(d) level. Properties, such as electronic structure, IR spectrum, heat of formation, thermodynamic properties and crystal structure have been predicted. This compound is most likely to crystallize in C2/c space group, and the corresponding cell parameters are Z = 8, a = 29.78 Å, b = 6.42 Å, c = 32.69 Å, α = 90.00°, β = 151.05°, γ = 90.00°and ρ = 1.94 g/cm3. In addition, the detonation velocity and pressure have also been calculated by the empirical Kamlet-Jacobs equation. As a result, the detonation velocity and pressure of this compound are 9.82 km/s, 44.67 GPa, respectively, a little higher than those of 4,10-dinitro-2,6,8,12–tetraoxa−4,10-diazaisowurtzitane(TEX, 9.28 km/s, 40.72 GPa). This compound has a comparable chemical stability to TEX, based on the N-NO2 trigger bond length analysis. The bond dissociation energy ranges from 153.09 kJ mol–1 to 186.04 kJ mol–1, which indicates that this compound meets the thermal stability requirement as an exploitable HEDM.
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The support of the National Natural Science Foundation of China (Grant No.61106078) and NUST Research Funding (Grant No.2011ZDJH28) are gratefully acknowledged.
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Lin, H., Zhu, Sg., Zhang, L. et al. Theoretical investigation of a novel high density cage compound 4,8,11,14,15–pentanitro-2,6,9,13–tetraoxa-4,8,11,14,15-pentaazaheptacyclo[5.5.1.13,11. 15,9] pentadecane. J Mol Model 19, 1019–1026 (2013). https://doi.org/10.1007/s00894-012-1629-3
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DOI: https://doi.org/10.1007/s00894-012-1629-3