Dioxidanylium

Dioxidanylium
Names
IUPAC name
oxooxidanium
Other names
Hydroperoxy cation; Hydridodioxygen(1+); Dioxidenium; dioxidanylium
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
508
  • InChI=1S/O2/c1-2/p+1
    Key: MYMOFIZGZYHOMD-UHFFFAOYSA-O
  • [OH+]=O
Properties
HO2+
Molar mass 33.005 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Dioxidanylium, which is protonated molecular oxygen, or just protonated oxygen, is an ion with formula HO+
2. It is formed when hydrogen containing substances combust, and exists in the ionosphere, and in plasmas that contain oxygen and hydrogen. Oxidation by O2 in superacids could be by way of the production of protonated molecular oxygen.

It is the conjugate acid of dioxygen. The proton affinity of dioxygen (O2) is 4.4 eV.

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