Hydrazinium 1 Azide, N2H5N3, and Its Monohydrazinate

3 Hydrazinium(1 +) Azide, N2H5N3, and Its Monohydrazinate, N2H5N3-N2H4 

Other names Hydrazonium azide, hydrazine azide 

N2H5N3 was observed during the thermal decomposition of 5-aminotetrazole (CN5H3) [5] and frans-2-tetrazene (see also p. 171) [6]. Besides NH4N3 traces of N2H5N3 were formed at 148 K in glow-discharged HN3 [7]. 

Because of its explosive nature, N2H5N3 was proposed to be used in propellant mixtures see e.g. [8 to 12]. The oxidizing properties can be applied in the chemical vapor deposition of semiconducting materials for electronic devices see e.g. [13 to 15]. 

Physical Properties. N2H5N3 crystallizes in the monoclinic space group P2i/b-C h (No. 14) with four formula units in the unit cell and the cell parameters a = 5.663(2), b = 12.436(3), c = 5.506(2) A, 7=114.0(0.1)° [4], or in the equivalent space group P2i/n with a = 5.665(2), b = 5.522(2), c= 11.401(4) A, (3 = 93.00(4)° [1, 16]. The structure was derived from single-crystal X-ray diffractometric data and refined to a reliability factor of 0.044. The structure is built up of N3 and N2H5 ions held together by a three-dimensional framework of N-H N 

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