Pentazolate anion (cyclo-N₅⁻) containing compounds have attracted wide interest in recent years. In this paper, to explore the fantastic chemistry of cyclo-N₅⁻, a novel polyamino 5/6/5-fused tricyclic-cation-based cyclo-N₅⁻ salt, 2,3,5,6-tetraamino-9-imino-5,9-dihydro-3H-bis([1,2,4]triazolo)[1,5-a:5′,1′-d][1,3,5]triazin-8-ium pentazol-1-ide (TABTT ⁺N₅⁻) was designed and synthesized. The chemical structures were determined by FTIR spectroscopy and single-crystal X-ray diffraction. TABTT ⁺N₅⁻ exhibited a planar layer structure and a regular face-to-face layer stacking due to the strong hydrogen-bonding networks formed between polyamino 5/6/5-fused tricyclic and cyclo-N₅⁻. TABTT ⁺N₅⁻ exhibited acceptable thermal stability (T_d: 106 ​°C), high density (1.638 ​g ​cm⁻³), high heat of formation (1078.122 ​kJ ​mol⁻¹), and a good balance between energy and safety with high detonation performances (v_D ​= ​8756 ​m ​s⁻¹, p ​= ​26.03 ​GPa) and a low sensitivity (IS ​= ​25 ​J, FS ​= ​360 ​N), demonstrating the potential of nitrogen-rich cyclo-N₅⁻ salts as high energy materials.

Pentazolate阴离子（环-N ₅ ^- ）的化合物已引起了广泛的兴趣在最近几年。在本文中，探索的奇妙化学环-N ₅ ^{- ，}新型聚5/6/5稠合三环阳离子基环- ñ ₅ ^-盐，2,3,5,6-四氨基-9-亚氨基5,9-二氢-3 H-双（[1,2,4]三唑）[1,5-a：5'，1'-d] [1,3,5]三嗪-8-戊唑-1-IDE（TABTT ⁺ ñ ₅ ^- ），设计并合成的。化学结构通过FTIR光谱和单晶X射线衍射确定。TABTT ⁺ Ñ ₅ ^-表现出的平面层结构和常规面到面层堆叠由于5/6 /聚氨基之间形成的强氢键网络5-稠合的三环和环-N ₅ ^- 。TABTT ⁺ Ñ ₅ ^-表现出可接受的热稳定性（Ť _d：106℃），高密度（1.638克厘米^-3），高形成的热（1078.122千焦摩尔^-1），和之间的良好平衡具有高爆震性能的能量和安全性（v _D  = 8756 m s ^-1，p = 26.03 GPa）的和一个低灵敏度（IS =为25J，FS = 360 N），这表明的富氮的潜在环- Ñ ₅ ^-盐作为高能量的材料。