Synthesis and Crystal Structure of Nitrogen-rich Compound: 2,5,2′-triazido-1,1′-azo-1,3,4-triazole

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The title compound 2,5,2′-triazido-1,1′-azo-1,3,4-triazole(2) has been synthesized by the reaction of 2,5,2′-trichloro-1,1′-azo-1,3,4-triazole(1) with sodium azide. Its crystal structure was determined by single-crystal X-ray diffraction. It crystallizes in triclinic, space group P−1 with a = 6.6604(13) A, b = 6.7035(13) A, c = 12.916 (3) A, α = 98.13(3)°, β = 95.56(3)°, γ = 106.48° V = 541.68(18) A3, Z = 2, C4HN17, Mr = 287.22, D c = 1.761 g cm−3, F(000) = 288 and μ(MoKa) = 0.140 mm−1, the final R = 0.0553 and wR = 0.1541. X-ray analysis indicates a stronger delocalization of the azo π bond along the hypothetical N4 moiety within the title compound than those in(E)-1,2-bis(2,6-diazido-9- azabicyclo[3.3.1]nonan-9-yl)diazene. The title compound 2,5,2′-triazido-1,1′-azo-1,3,4-triazole has been synthesized by the reaction of 2,5,2′-trichloro-1,1′-azo-1,3,4-triazole with sodium azide. Its crystal structure was determined by single-crystal X-ray diffraction. X-ray analysis indicates a stronger delocalization of the azo π bond along the hypothetical N4 moiety within the title compound than those in(E)-1,2-bis(2,6-diazido-9-azabicyclo[3.3.1] nonan-9-yl)diazene.