Spectral, Structural, and Thermal Data

The infrared frequency of N2H4 of metal azide hydrazines is 

The IR spectrum of Ca(N3)2-1.5N2H4 shows characteristic azide absorptions at 2080, 1310, and 640 cm while the absorptions at 3400, 3350,1655, 1600, 880, 820, and 600cm are due to hydrazine. The Zn-n frequency of N2H4 appearing at 880cm indicates the presence of hydrazine as an adduct. The absence of a j n-n frequency around 970 cm proves that N2H4 is not coordinated. The IR spectrum of Ba(N3)2 shows characteristic azide absorptions at 2080, 1310, and 640cm .  

The structure of M(N3)2(N2H4)2 is expected to be similar to the halide complexes, exhibiting octahedral coordination of the metal ion, which is surrounded by 4N atoms of N2H4 and 2N atoms of the azide [23]. The observed M-N stretching frequencies of M-N3 and M—N2H4 support the above argument. 

The DTA of calcium azide hydrazine shows two exotherms. The first exotherm at 16 8 °C corresponds to the loss of hydrazine, yielding anhydrous calcium azide. The second exotherm at 286 °C corresponds to the explosion temperature of Ca(N3)2. The DTA of Ba(N3)2 shows an exotherm at236 °C, which corresponds to the explosion temperature of Ba(N3)2- 

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