Article · Wikipedia archive · Last revised Jun 18, 2026

Triazene

Triazene is an unsaturated inorganic compound having the chemical formula N3H3. It has one double bond and is the second-simplest member of the azene class of hydronitrogen compounds, after diimide. Triazenes are a class of organic compounds containing the functional group −N(H)−N=N−. Triazene, possibly along with its isomer triimide (HNNHNH), has been synthesized in electron-irradiated ices of ammonia and ammonia/dinitrogen and detected in the gas phase after sublimation.

Last revised
Jun 18, 2026
Read time
≈ 1 min
Length
211 w
Citations
1
Source
Wikipedia ↗
Triazene
Structural formula of triazene
source ↗
Space-filling model of the triazene molecule
source ↗
Names
IUPAC name
Triazene
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
49028
UNII
  • InChI=1S/H3N3/c1-3-2/h(H3,1,2) checkY
    Key: AYNNSCRYTDRFCP-UHFFFAOYSA-N checkY
  • NN=N
Properties
H3N3
Molar mass 45.045 g·mol−1
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g. propaneInstability 4: Readily capable of detonation or explosive decomposition at normal temperatures and pressures. E.g. nitroglycerinSpecial hazards (white): no code
source ↗
3
4
4
Related compounds
Other anions
 Triphosphane
Related Binary azanes
 ammonia
diazane
triazane
Related compounds
 Diazene
Tetrazene
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Triazene is an unsaturated inorganic compound having the chemical formula N3H3. It has one double bond and is the second-simplest member of the azene class of hydronitrogen compounds, after diimide. Triazenes are a class of organic compounds containing the functional group −N(H)−N=N−. Triazene, possibly along with its isomer triimide (HNNHNH), has been synthesized in electron-irradiated ices of ammonia and ammonia/dinitrogen and detected in the gas phase after sublimation.1

References

References

  1. M. Förstel; Y. A. Tsegaw; P. Maksyutenko; A. M. Mebel; W. Sander; R. I. Kaiser (2016). "On the formation of N3H3 isomers in irradiated ammonia bearing ices: Triazene (H2NNNH) or Triimide (HNHNNH)". ChemPhysChem. 17 (17): 2726–2735. doi:10.1002/cphc.201600414. PMID 27344990.
External links