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According to the X-ray diffraction data, compounds formerly known as 3(5)-nitroamino-1,2,4-triazoles are in fact N-nitroimines rather than primary N-nitroamines. Their chemical properties and UV and NMR spectra indicate their nitroimine structure in solution as well.* For communication I, see [1].

Triazole derivativesTriazole derivatives R 0280 N-Nitroimines. Part 1. Synthesis, Structure, and Properties of 3,5-Diamino-1-nitroamidino-1,2,4-triazole. -The reaction of the triazole (I) with 2-methyl-1-nitroisothiourea gives the title compound (III) instead of the expected nitroguanidine (IV). -(ASTAKHOV, A. M.; VASIL'EV, A. D.; GELEMURZINA, I. V.; SOKOLENKO, V. A.; KRUGLYAKOVA, L. A.; STEPANOV, R. S.; Russ.

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