作者:Yangen Huang、Haixiang Gao、Brendan Twamley、Jean'ne M. Shreeve
DOI:10.1002/chem.200801976
日期:2009.1.12
High density energetic salts containing nitrogen‐rich cations and the nitranilic anion were readily synthesized in high yield by metathesis reactions of sodium nitranilate 2 and an appropriate halide. All of the new compounds were fully characterized by elemental, spectral (IR, 1H, 13C NMR), and thermal (DSC) analyses. The structure of hydrazinium nitranilate (4) was also determined by single‐crystal
通过硝酸亚硝酸钠2和适当的卤化物的复分解反应,可以轻松地高收率地合成含有富氮阳离子和硝酸根阴离子的高密度含能盐。所有新化合物均通过元素分析,光谱分析(IR,1 H,13 C NMR)和热分析(DSC)进行了全面表征。还通过单晶X射线分析确定了氨基苯甲酸肼盐(4)的结构。阴离子的高对称性和氧含量使这些盐具有广泛的氢键结合能力,从而进一步导致了高密度,低水溶性和高热稳定性(T d> 200°C)的这些化合物。使用Gaussian 03和Cheetah 5.0进行理论性能计算。这些新盐的计算爆炸压力(P)在17.5 GPa(10)和31.7 GPa(4)之间,并且爆炸速度(νD)在7022 m s -1(13)和8638 m s -1(4)之间。
High-energy-density materials based on 1-nitramino-2,4-dinitroimidazole
New energetic salts based on 1-nitramino-2,4-dinitroimidazole were successfully synthesized. The salts were fully characterized by 1H, 13C NMR and IR spectroscopy, differential scanning calorimetry (DSC), and elemental analyses. The salts were found to have good physical and detonation properties. The structure of guanidinium salt (3) was further confirmed by single-crystal X-ray diffraction. The densities of the energetic salts ranged between 1.70 and 1.93 g cm−3 as measured by a gas pycnometer. The detonation pressures and velocities calculated by the EXPLO5 code ranged within 29.3–40.5 GPa and 8370–9209 m s−1, respectively.
基于1-硝氨基-2,4-二硝基咪唑的新的能量盐成功合成。盐被全面表征,包括1H、13C核磁共振和红外光谱,差示扫描量热法(DSC)以及元素分析。研究发现这些盐具有良好的物理和爆炸特性。胍盐(3)的结构通过单晶X射线衍射进一步确认。这些能量盐的密度测量结果在1.70到1.93 g cm−3之间,使用气体比重计进行测量。通过EXPLO5代码计算的爆炸压力和速度分别在29.3–40.5 GPa和8370–9209 m s−1之间。
Synthesis and characterization of the layered insensitive pentazolate salts based on two triazolium isomers
作者:Siyuan Chen、Chen Yang、Chengguo Sun、Chong Zhang、Chao Gao、Yang Du、Bingcheng Hu
DOI:10.1016/j.molstruc.2021.131521
日期:2022.2
synthesized two targeted cyclo-pentazolate salts with layered stacking mode in their crystal structures based on two isomeric cations: 3,4,5-triamino-1,2,4-triazolium and 3-hydrazino-4-amino-1,2,4-triazolium. The results demonstrate that the aromaticity of triazole and pentazole rings arouse the π−π interaction force, promoting the formation of a layer-by-layer crystal stacking structure. Two compounds
1-(3,5-Dinitro-1H-pyrazol-4-yl)-3-nitro-1H-1,2,4-triazol-5-amine (HCPT) and its energetic salts: highly thermally stable energetic materials with high-performance
4-triazolium salt (12), and copper(II) complex (16) were determined by single-crystal X-ray diffraction. The physicochemical properties of the compounds, such as density, thermal stability, and sensitivity towards impact and friction were evaluated; all energetic compounds exhibited excellent thermal stabilities with decomposition temperatures ranging from 215 °C to 340 °C, and high positive heats of formation
一种新型的高能耐热炸药1-(3,5-dinitro-1 H -pyrazol-4-yl)-3-nitro-1 H -1,2,4-triazol-5-amine(HCPT)具有与其盐一起合成。对化合物进行了深入的表征,包括1 H和13 C NMR光谱,IR光谱和元素分析。中性HCPT(3)的晶体结构,三氨基胍盐(10),3,4,5-三氨基1,2,4-三唑盐(12)和铜(II)配合物(16)的晶体结构。通过单晶X射线衍射测定。评估了化合物的物理化学性质,例如密度,热稳定性以及对冲击和摩擦的敏感性;所有高能化合物均表现出出色的热稳定性,分解温度范围为215°C至340°C,并且在622.8 kJ mol -1和1211.7 kJ mol -1之间有较高的正形成热。使用EXPLO5(V6.01)根据实验密度和计算的形成热计算高能化合物的爆轰压力和速度,其相应值在26.5 GPa至37.8 GPa和8236
3,4,5-Trinitropyrazole-Based Energetic Salts
作者:Yanqiang Zhang、Yong Guo、Young-Hyuk Joo、Damon A. Parrish、Jean'ne M. Shreeve
DOI:10.1002/chem.201001243
日期:2010.9.17
AbstractHigh‐density energetic salts that are comprised of nitrogen‐rich cations and the 3,4,5‐trinitropyrazolate anion were synthesized in high yield by neutralization or metathesis reactions. The resulting salts were fully characterized by 1H, 13C NMR, and IR spectroscopy; differential scanning calorimetry; and elemental analysis. Additionally, the structures of the 3,5‐diaminotriazolium and triaminoguanidinium 3,4,5‐trinitropyrazolates were confirmed by single‐crystal X‐ray diffraction. Based on the measured densities and calculated heats of formation, the detonation performances (pressure: 23.74–31.89 GPa; velocity: 7586–8543 ms−1; Cheetah 5.0) of the 3,4,5‐trinitropyrazolate salts are comparable with 1,3,5‐triamino‐2,4,6‐trinitrobenzene (TATB; 31.15 GPa and 8114 ms−1). Impact sensitivities were determined to be no less than 35 J by hammer tests, which places these salts in the insensitive class.