Venugopal Thottempudi, Jiaheng Zhang, Chunlin He
Oct 9, 2014
Citations
0
Influential Citations
38
Citations
Journal
RSC Advances
Abstract
5,5′-Diamino-3,3′-azo-1,2,4-oxadiazole (3) was synthesized by reacting 3,5-diamino-1,2,4-oxadiazole with potassium permanganate in the presence of an organic solvent. Nitration of 5-amino-3-azo-1,2,4-oxadiazole gave rise to the 1,2,4-oxadiazolone (4) directly rather than the nitramine compound. Energetic salts of oxadiazolone 4 were prepared by treating with amine bases. These high nitrogen compounds were fully characterized using IR and multinuclear NMR spectroscopy, elemental analysis, and differential scanning calorimetry (DSC), and, in case of 3, with single crystal X-ray structuring. All the azo-substituted 1,2,4-oxadiazoles are impact insensitive materials.