一种新的氮杂环的N-官能化策略被用于合成基于硝基唑的高能材料,从而产生了新系列的高密度和富氧高能材料。通过红外光谱,核磁共振光谱,元素分析,DSC和X射线衍射对它们进行了表征。这些新分子显示出高密度,中等到良好的热稳定性,可接受的冲击和摩擦敏感性以及出色的爆炸特性,这表明它们可能作为高能材料或氧化剂。有趣的是,在四唑基CHNO高能材料中,化合物5迄今为止的最高测量密度为1.97 g cm -3。5c到目前为止,它是第一个也是唯一一个具有正OB的杂环CHNO高能盐。与高度爆炸性的HMX相比,化合物5和6表现出出色的爆炸特性(38.5 GPa,9.22 km s -1; 37.0 GPa,9.05 km s -1)。具有高OB,具体冲动5,图5b,图5c和图6C都优于那些AP和ADN作为纯化合物,和氧化剂/铝的比值/ PBAN(%)为80:20:0或80:13 :7.此外,计算结果,BDE,M
Synthesis and properties of 1-dinitromethyl-3-R-1,2,4-triazoles
摘要:
Reductive denitration of 1-trinitromethyl-3-R-1,2,4-triazoles by KI or NH2OH followed by the treatment of the formed 1-dinitromethyl-3-R-1,2,4-triazoles salts with sulfuric acid yielded dinitromethyl compounds (R = H, N-3, Cl, NO2), sufficiently strong CH-acids (pK(a) 1.37-0.12) whose typical reactions are similar to those of gem-dinitrocompounds from the aliphatic series. The spectral data and the analysis of correlation relations between pK(a) of 1-dinitromethyl-3-R-1,2,4-triazoles and the substituent constants confirm that their structure is analogous to that of the majority of compounds belonging to the mentioned series.
Mechanism of nitration of nitrogen-containing heterocyclic N-acetonyl derivatives. General approach to the synthesis of N-dinitromethylazoles
作者:V. V. Semenov、S. A. Shevelev、A. B. Bruskin、M. I. Kanishchev、A. T. Baryshnikov
DOI:10.1007/s11172-009-0285-y
日期:2009.10
bicyclic analogs, as well as imides of carboxylic and sulfonic acids and substituted hydrazines with mixtures of sulfuric and nitric acids. The kinetic study of the reaction mechanism was performed using UV and NMR spectroscopy. It was found that the NO2 groups were sequentially introduced into the methylene fragment by the addition of the nitronium ion to multiple bonds of intermediate enols followed
3D honeycomb construction of N-fluorodinitromethyl substituted polynitroazoles based on hydrogen-bonded staggered conformation: Toward high-density melt-cast explosive instead of TNT
作者:Jianfu Ma、Chengming Bian、Ximei Yang、Xiang Guo、Bindong Li、Long Lu