Synthesis, characterization and properties of nitrogen-rich compounds based on cyanuric acid: a promising design in the development of new energetic materials
Nitrogen-rich compounds such as ammonium (1), hydrazinium (2), aminoguanidinium (3), diaminoguanidinium (4), triaminoguanidinium (5), aminonitroguanidinium (6), aminocarbonylguanidinium (7), and metforminium (8), based on a nitrogen-rich anion [CA− (N% = 32.55%, CA = cyanuric acid) and co-crystal 5-amino-1H-tetrazole based on CA (9) were synthesized by means of metathesis reactions. The crystal structures
富含氮的化合物,例如铵(1),肼(2),氨基胍(3),二氨基胍(4),三氨基胍(5),氨基硝基胍(6),氨基羰基胍(7)和二甲双胍(8)富氮阴离子[CA - (ñ%= 32.55%,CA =氰尿酸)和共晶体的5-氨基-1- ħ四唑基于CA(9)通过复分解反应的方法合成。化合物的晶体结构2,4,和9·H 2 ö通过单晶X-射线衍射测定,并通过UV-vis,FT-IR,1 H NMR,MS和元素分析充分表征。通过差热分析(DTA)和热重分析(TGA)研究了热稳定性。DTA结果表明,所有化合物均表现出较高的热稳定性。此外,通过使用B3LYP功能和6-311 ++ G **基数和Born-Haber能量循环来计算形成热。理论计算提供了高能盐的爆炸压力和速度,范围为16.88–30.71 GPa和6276.5–8392.1 ms -1, 分别。化合物的冲击敏感性通过落锤试验确定。所有化合物的不敏感碰撞敏感性均大于60
Transition Metal Complexes of 3-Amino-1-nitroguanidine as Laser Ignitible Primary Explosives: Structures and Properties
作者:Niko Fischer、Manuel Joas、Thomas M. Klapötke、Jörg Stierstorfer
DOI:10.1021/ic402038x
日期:2013.12.2
3-Amino-1-nitroguanidine (ANQ, 2) was synthesized via hydrazinolysis of nitroguanidine. By dissolving 2 in solutions containing transition metal salts, several complexes M2+(ANQ)(2)X-2(H2O)(y) with M2+ = Co, Ni, Cu, Zn as well as M(ANQ)(2)X(H2O)(y) with M = Ag could be isolated. In these cases, nitrate as well as perchlorate and chloride served as the respective anions X. Additionally, the ANQ complexes of Co, Ni, and Ag with dinitramide as the anion were synthesized from ANQ and silver dinitramide and by reacting the cobalt and nickel ANQ perchlorate complexes with ammonium dinitramide. The crystal structures of all described complexes were determined by low temperature single-crystal X-ray diffraction. Additionally, they were characterized using IR spectroscopy and elemental analysis. The decomposition temperatures were determined by differential scanning calorimetry and the sensitivities toward impact and friction were assessed using a BAM drophammer and a BAM friction tester (BAM = Bundesanstalt fur Materialforschung und -prufung). Additionally, the sensitivity toward electrostatic discharge was determined on a small-scale ESD device. The potential use of the nitrate, dinitramide and perchlorate containing species as primary explosives was investigated in a laser ignition test.
作者:Ruihu Wang、Yong Guo、Zhuo Zeng、Jean’ne M. Shreeve
DOI:10.1039/b823157e
日期:——
A series of nitrogen-rich nitroguanidyl-functionalized tetrazolate salts paired with guanidinium-derivatized and heterocycle-based cations were synthesized and most exhibit better thermal stability, higher density and more positive heat of formation than their tetrazolate analogues.