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Peroxynitrous acid
Names
Preferred IUPAC name
Peroxynitrous acid[citation needed]
Systematic IUPAC name
(Hydridodioxido)oxidonitrogen[1][2]
Identifiers
CAS Number
14691-52-2Y
3D model (JSmol)
Interactive image
ChEBI
CHEBI:25942Y
ChEMBL
ChEMBL1794794Y
ChemSpider
109951Y
Gmelin Reference
49207
MeSH
Peroxynitrous+Acid
PubChem CID
123349
CompTox Dashboard (EPA)
DTXSID00163543
InChI
InChI=1S/HNO3/c2-1-4-3/h3HY
Key: CMFNMSMUKZHDEY-UHFFFAOYSA-NY
SMILES
OON=O
Properties
Chemical formula
NHO 3
Molar mass
63.0128 g mol−1
Conjugate base
Peroxynitrite
Related compounds
Related compounds
Nitroxyl
Nitrous acid
Nitrosyl bromide
Nitrosyl chloride
Nitrosyl fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
Peroxynitrous acid (HNO3) is a reactive nitrogen species (RNS). It is the conjugate acid of peroxynitrite (ONOO−). It has a pKa of approximately 6.8. It is formed in vivo from the diffusion-controlled reaction of nitrogen monoxide (ON•) and superoxide (O•− 2). It is an isomer of nitric acid and isomerises with a rate constant of 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.
^N.Connelly and T. Damhus, IUPAC. Nomenclature of Inorganic Chemistry, RSC Publishing, Cambridge, 2005
^"Peroxynitrous Acid - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 16 September 2004. Identification and Related Records. Retrieved 11 April 2012.
^Koppenol, W. H.; Bounds, P. L.; Nauser, T.; Kissner, R.; Rüegger, H. (2012). "Peroxynitrous acid: controversy and consensus surrounding an enigmatic oxidant". Dalton Transactions. 41: 13779–13787.
Peroxynitrousacid (HNO3) is a reactive nitrogen species (RNS). It is the conjugate acid of peroxynitrite (ONOO−). It has a pKa of approximately 6.8. It...
Peroxynitric acid or peroxonitric acid is a chemical compound with the formula HNO 4. It is an oxyacid of nitrogen, after peroxynitrousacid. Peroxynitrate...
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nitrogen species: Nitroxyl, HNO Nitroxylic acid, H4N2O4 Peroxynitrousacid, HOONO Peroxynitric acid, HOONO2 This set index article lists chemical compounds...
This leads to the oxidisation of cytochrome c2+ to cytochrome c3+ by peroxynitrousacid, an intermediate made through the reaction of nitric oxide and superoxide...
An oxyacid, oxoacid, or ternary acid is an acid that contains oxygen. Specifically, it is a compound that contains hydrogen, oxygen, and at least one...
corresponds to two structural isomers; the peroxynitrousacid in the above figure and the more stable nitric acid. With the formula HNO3, the simple approach...
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