Bromine dioxide

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Bromine dioxide
Bromine-dioxide-radical-resonance-hybrid-2D.png
Bromine-dioxide-MP2-CM-3D-balls.png
Names
IUPAC name
Bromine dioxide
Identifiers
21255-83-4 YesY
ChemSpider 4574124 N
Jmol 3D model Interactive image
PubChem 5460629
  • InChI=1S/BrO2/c2-1-3 N
    Key: SISAYUDTHCIGLM-UHFFFAOYSA-N N
  • InChI=1/BrO2/c2-1-3
    Key: SISAYUDTHCIGLM-UHFFFAOYAZ
  • O=Br=O
Properties
BrO2
Molar mass 111.903 g/mol[1]
Appearance unstable yellow crystals
Melting point decomposes around 0°C

[2]

Vapor pressure {{{value}}}
Related compounds
Other anions
Bromine monoxide
Bromine trifluoride
Bromine pentafluoride
Other cations
Oxygen difluoride
Dichlorine monoxide
Chlorine dioxide
Iodine dioxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YesYN ?)
Infobox references

Bromine dioxide is the chemical compound composed of bromine and oxygen with the formula BrO2. It forms unstable yellow[2] to yellow-orange[1] crystals. It was first isolated by R. Schwarz and M. Schmeißer in 1937 and is hypothesized to be important in the atmospheric reaction of bromine with ozone.[3] It is similar to chlorine dioxide, the dioxide of its halogen neighbor one period higher on the periodic table.

Reactions

Bromine dioxide is formed when an electric current is passed through a mixture of bromine and oxygen gases at low temperature and pressure.[4]

Bromine dioxide can also be formed by the treatment of bromine gas with ozone in trichlorofluoromethane at −50 °C.[1]

When mixed with a base, bromine dioxide gives the bromide and bromate anions:[4]

6 BrO2 + 6 NaOHNaBr + 5 NaBrO3 + 3 H2O

References

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