5-Aminotetrazole

5-Aminotetrazole

Names
Other names 4-ATZ
Identifiers
CAS Number	4418-61-5
ChemSpider	19274
Jmol 3D model	Interactive image
PubChem	24879141
InChI InChI=1S/CH3N5/c2-1-3-5-6-4-1/h(H3,2,3,4,5,6) Key: ULRPISSMEBPJLN-UHFFFAOYSA-N InChI=1/CH3N5/c2-1-3-5-6-4-1/h(H3,2,3,4,5,6) Key: ULRPISSMEBPJLN-UHFFFAOYAD
SMILES c1([nH]nnn1)N
Properties
Chemical formula	CH3N5
Molar mass	85.07
Appearance	white solid
Density	1.502 g/cm^3
Melting point	201-205 °C
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

5-Aminotetrazole is the organic compound with the formula HN₄CNH₂. It is a colorless solid that can be obtained both in anhydrous and hydrated forms. The compound has a particularly high nitrogen content of 80%. Partly for this reason the compound is prone to decomposition to nitrogen gas (N₂). It has been widely investigated for gas-generating systems, such as airbags and blowing agents.^[1]

The molecule is planar.^[2] The hydrogen bonding pattern in the hydrate supports the assignment of NH being adjacent to carbon in the ring.^[3]

References

1. Lesnikovich, A. I.; Ivashkevich, O. A.; Levchik, S. V.; Balabanovich, A. I.; Gaponik, P. N.; Kulak, A. A. "Thermal decomposition of aminotetrazoles" Thermochimica Acta 2002, vol. 388, pp. 233-251. doi:10.1016/S0040-6031(02)00027-8
2. Hiroshi Fujihisa, Kazumasa Honda, Shigeaki Obata, Hiroshi Yamawaki, Satoshi Takeya, Yoshito Gotoha, Takehiro Matsunaga "Crystal structure of anhydrous 5-aminotetrazole and its high-pressure behavior" CrystEngComm, 2011, volume 13, pp. 99-102. doi:10.1039/C0CE00278J
3. D. D. Bray and J. G. White "Refinement of the structure of 5-aminotetrazole monohydrate" Acta Crystallogr. (1979). B35, pp. 3089-3091.doi:10.1107/S0567740879011493