Dense energetic compounds of C, H, N, and O atoms. III. 5-[4-nitro-(1,2,5)oxadiazolyl]-5H-[1,2,3]triazolo[4,5-c][1,2,5]oxadiazole

Diazidoazofurazan 8 was obtained from the bis-diazonium salt of diaminoazofurazan 7 by treatment with sodium azide and underwent thermolysis to 5-[4-azido-(1,2,5)oxadiazolyl]-5H-[1,2,3]triazolo[4,5-c][1,2,5] oxadiazole 5. The corresponding amine 13 was obtained from the azide 5 by reduction with stannous chloride and was oxidized by ammonium persulfate to 5-[4-nitro-(1,2,5)oxadiazolyl]-5H-[1,2,3]triazolo[4,5-c][1,2,5]oxadiazole 1. The azide 5 was converted to a phosphinimine 9 in a reaction with triphenylphosphine.