Pentazine

For the pharmaceutical drug with the brand name Pentazine, see promethazine.

Pentazine is a hypothetical chemical compound that consists of a six-membered aromatic ring containing five nitrogen atoms with the molecular formula CHN₅. The name pentazine is used in the nomenclature of derivatives of this compound.

Pentazine

Names
Preferred IUPAC name Pentazine
Identifiers
CAS Number	290-97-1 Y
3D model (JSmol)	Interactive image Interactive image
ChemSpider	4953936 Y
PubChem CID	6451471
CompTox Dashboard (EPA)	DTXSID50183195
SMILES C1=NN=NN=N1 c1nnnnn1
Properties
Chemical formula	CHN5
Molar mass	83.054 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N (what is YN ?) Infobox references

Pentazine is predicted to be unstable and to decompose into hydrogen cyanide (HCN) and nitrogen (N₂).^[1] The activation energy required is predicted to be around 20 kJ/mol.^[2]

See also

• 6-membered rings with one nitrogen atom: pyridine
• 6-membered rings with two nitrogen atoms: diazines
• 6-membered rings with three nitrogen atoms: triazines
• 6-membered rings with four nitrogen atoms: tetrazines
• 6-membered rings with six nitrogen atoms: hexazine

References

1. Hurst, Derek T. (1996). "Other Tetrazines and Pentazines". Comprehensive Heterocyclic Chemistry II. pp. 957–965. doi:10.1016/B978-008096518-5.00138-6. ISBN 9780080965185.
2. J. Fabian and E. Lewars (2004). "Azabenzenes (azines) — The nitrogen derivatives of benzene with one to six N atoms: Stability, homodesmotic stabilization energy, electron distribution, and magnetic ring current; a computational study" (PDF). Canadian Journal of Chemistry. 82 (1): 50–69. doi:10.1139/v03-178. Archived from the original (PDF) on 2005-03-29.