Bromine dioxide
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| Names | |
|---|---|
| IUPAC name
Bromine dioxide | |
| Identifiers | |
21255-83-4  | |
| ChemSpider | 4574124  |
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| Jmol-3D images | Image |
| PubChem | 5460629 |
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| Properties | |
| BrO2 | |
| Molar mass | 111.903 g/mol[1] |
| Appearance | unstable yellow crystals |
| Melting point | decomposes around 0°C |
| Related compounds | |
| Other anions |
Bromine monoxide Bromine trifluoride Bromine pentafluoride |
| Other cations |
Oxygen difluoride Dichlorine monoxide Chlorine dioxide Iodine dioxide |
| Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
| verify (what is: /?) | |
| 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 electrical 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]
References
- ↑ 1.0 1.1 1.2 Perry, Dale L.; Phillips, Sidney L. (1995), Handbook of Inorganic Compounds, CRC Press, p. 74, ISBN 0-8493-8671-3, retrieved 17 March 2009
- ↑ 2.0 2.1 Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, p. 447, ISBN 0-8493-0594-2
- ↑ Muller, Holger S.P.; Charles E. Miller, Edward A. Cohen (November 22, 1997), "Rotational spectrum and molecular properties of bromine dioxide, OBrO", Journal of Chemical Physics 107 (20): 82–92, doi:10.1063/1.475030, ISSN 0021-9606, retrieved 17 March 2009
- ↑ 4.0 4.1 Arora, M.G. (1997), P-Block Elements, New Delhi: Anmol Publications, p. 256, ISBN 978-81-7488-563-0, retrieved 17 March 2009