Peroxynitrous acid

Peroxynitrous acid
Names
Preferred IUPAC name
Peroxynitrous acid
Systematic IUPAC name
(Hydridodioxido)oxidonitrogen[1][2]
Identifiers
14691-52-2 YesY
ChEBI CHEBI:25942 YesY
ChEMBL ChEMBL1794794 YesY
ChemSpider 109951 YesY
49207
Jmol interactive 3D Image
MeSH Peroxynitrous+Acid
PubChem 123349
Properties
NHO
3
Molar mass 63.0128 g mol−1
Related compounds
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Peroxynitrous acid (HNO3) is a reactive nitrogen-containing species (RNS). It is the conjugate acid of peroxynitrite (ONOO). It has a pKa of ~6.8. It is formed in vivo from the diffusion-controlled reaction of nitrogen monoxide (NO) and superoxide (O•−
2
). It isomerises with k = 1.2 s−1, a process whereby up to 5% of hydroxyl and nitrogen dioxide radicals may be formed. It oxidises and nitrates aromatic compounds in low yield. The mechanism may involve a complex between the aromatic compound and ONOOH, and a transition from the cis- to the trans-configuration of ONOOH.[3] Peroxynitrous acid is also important in atmospheric chemistry.

References

  1. N.Connelly and T. Damhus, IUPAC. Nomenclature of Inorganic Chemistry, RSC Publishing, Cambridge, 2005
  2. "Peroxynitrous Acid - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 16 September 2004. Identification and Related Records. Retrieved 11 April 2012.
  3. W. H. Koppenol, P. L. Bounds, T. Nauser, R. Kissner, H. Rüegger, "Peroxynitrous acid: controversy and consensus surrounding an enigmatic oxidant", Dalton Trans., 2012, 41, 13779–13787.
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