Theoretical study on the trans–cis isomerization and initial decomposition of energetic azofurazan and azoxyfurazan

Pressure-Dependent Luminescence and Absorption in 3,3′-Diamino-4,4′-azoxyfurazan: Secondary Bonding Interaction in Molecular Crystals

“…With increasing attention on security and detonation performance of energetic materials, more research is focused on the connection between their properties and organic nature. − The sensitivity of an explosive closely depends on its molecular conformer and crystal structure. Explosives with aromatic heterocyclic systems such as 2,4,6-triamino-1,3,5-trinitrobenzene (TATB), − 1,1-diamino-2,2-dinitroethene (FOX-7), − 3,3′-diamino-4,4′-azoxyfurazan (DAAF), − and so forth are typical high insensitive energetic materials (HIEM) because of their π-stacked structure and parallel layer-by-layer molecular arrangement. Research, from both experimental and theoretical perspective, indicates that the interlayer slide and the compression of the π-stacked structure can effectively convert external mechanical stimuli into intermolecular interaction energy, which can reduce the formation of hot spots and further impact the detonation performance of energetic materials. , …”

Investigation of the Solubility of 3,4‐Diaminofurazan (DAF) and 3,3′‐Diamino‐4,4′‐azoxyfurazan (DAAF) at Temperatures Between 293.15 K and 313.15 K

“…Furazan-basedm aterials are av ery important classo fe nergetic compounds, which have received much attention due to their attractive properties such as high energy density, low sensitivity,h igh thermals tability,a nd high percentage of nitrogen content [1].3 ,4-Diaminofurazan (DAF,c hemical structure as illustrated in Scheme 1a) is the key precursor for the synthesis of explosives containingf urazan structure. DAF was successfully synthesized in 1968 by Coburn [2], and could bef unctionalized in further by introducing nitro, azido, and aminog roupst os ynthesize many furazanbased, high nitrogen content, insensitive energetic materials [3][4][5],i ncluding 3,3'-diamino-4,4'-azoxyfurazan (DAAF), which was firstlys ynthesized by Russian scientists in 1981 [5].T he moleculars tructure of DAAF (illustrated in Scheme 1b) contains two aromatic amino furazan rings, which were connectedb ya na zoxy group.…”