Peroxynitric acid
Names
Preferred IUPAC name
Hydroxy nitrate
Systematic IUPAC name
Hydroxy nitrate[1][2][3]
Identifiers
3D model (JSmol)
ChemSpider
  • Key: UUZZMWZGAZGXSF-UHFFFAOYSA-N checkY[Pubchem]
  • [N+](=O)([O-])OO
Properties
HNO4
Molar mass 79.01224 g/mol
Conjugate base Peroxynitrate
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Peroxynitric acid or peroxonitric acid is a chemical compound with the formula HNO
4. It is an oxyacid of nitrogen, after peroxynitrous acid.

Preparation

Peroxynitrate, the conjugate base of peroxynitric acid, is formed rapidly during decomposition of peroxynitrite in neutral conditions.[4]

Atmospheric chemistry

Peroxynitric acid is formed in the atmosphere, although it is unstable, it is important as a reservoir for NO2 through the reversible radical reaction:[5]

HO
2NO
2 ⇌ HO•
2 + NO•
2

References

  1. ^ "Peroxynitric Acid - Compound Summary".
  2. ^ "peroxynitric acid". PubChem. Retrieved 9 December 2012.
  3. ^ "125239-87-4". ChemIndex. Retrieved 9 December 2012.
  4. ^ Miyamoto, S; Ronsein, GE; Corrêa, TC; Martinez, GR; Medeiros, MH; Di Mascio, P (2009). "Direct evidence of singlet molecular oxygen generation from peroxynitrate, a decomposition product of peroxynitrite". Dalton Trans (29): 5720–9. doi:10.1039/b905560f. PMID 20449086.
  5. ^ Finlayson-Pitts, Barbara J.; Pitts, James N. (2000), Chemistry of the Upper and Lower Atmosphere, Elsevier, p. 100, doi:10.1016/b978-012257060-5/50000-9, ISBN 978-0-12-257060-5, retrieved 2020-09-24


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