Xu Yuangang, Lin Qiuhan, Wang Pengcheng, Lu Ming
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
Chem Asian J. 2018 Apr 16;13(8):924-928. doi: 10.1002/asia.201800187. Epub 2018 Mar 14.
According to previous reports, metal cations or water molecules are necessary for the stabilization of pentazolate anion (cyclo-N ) at ambient temperature and pressure. Seeking a new method to stabilize N is a big challenge. In this work, three anhydrous, metal-free energetic salts based on cyclo-N 3,9-diamino-6,7-dihydro-5 H-bis([1,2,4]triazolo)[4,3-e:3',4'-g][1,2,4,5] tetrazepine-2,10-diium, N-carbamoylguanidinium, and oxalohydrazinium (oxahy ) pentazolate were synthesized and isolated. All salts were characterized by elemental analysis, IR spectroscopy, H, C, and (in some cases) N NMR spectroscopy, thermal analysis (TGA and DSC), and single-crystal XRD analysis. Computational studies associated with heats of formation and detonation performance were performed by using Gaussian 09 and Explo5 programs, respectively. The sensitivity of the salts towards impact and friction was determined, and overall the real N explosives showed promising energetic properties.
根据先前的报道，在常温常压下，金属阳离子或水分子对于五唑阴离子（环 -N ）的稳定是必要的。寻求一种稳定N的新方法是一项巨大的挑战。在这项工作中，合成并分离出了三种基于环 -N 的无水、无金属含能盐，分别是3,9 - 二氨基 - 6,7 - 二氢 - 5 H - 双（[1,2,4]三唑并）[4,3 - e:3',4' - g][1,2,4,5]四氮杂卓 - 2,10 - 二铵、N - 氨基甲酰胍和草酸肼鎓（oxahy ）五唑盐。所有盐均通过元素分析、红外光谱、 氢、 碳以及（某些情况下的） 氮核磁共振光谱、热分析（热重分析和差示扫描量热法）和单晶X射线衍射分析进行了表征。分别使用高斯09和Explo5程序进行了与生成热和爆轰性能相关的计算研究。测定了这些盐对撞击和摩擦的敏感度，总体而言，这些真正的含氮炸药显示出有前景的含能性能。
