Dibromine trioxide is the chemical compound composed of bromine and oxygen with the formula Br2O3. It is an orange solid that is stable below −40 °C. It has the structure Br−O−BrO2 (bromine bromate).[3] It was discovered in 1993.[2] The bond angle of Br−O−Br is 111.7°, the bond angle of O−Br=O is 103.1°, and the bond angle of O=Br=O is 107.6°. The Br−OBrO2 bond length is 1.845 Å, the O−BrO2 bond length is 1.855 Å and the Br=O bond length is 1.612 Å.[4]
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| Names | |
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| IUPAC name
Dibromine trioxide
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| Other names
Bromine trioxide
Bromine bromate | |
| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
PubChem CID
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| Properties | |
| Br2O3 | |
| Molar mass | 207.806 g/mol |
| Appearance | orange needles |
| Melting point | decomposes around −40°C[1] |
| Structure[2] | |
| monoclinic | |
| P21/c | |
a = 1186.6 pm, b = 762.9 pm, c = 869.3 pm α = 90°, β = 106.4°, γ = 90°
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| Related compounds | |
Other anions
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Bromine dioxide Bromine trifluoride Bromine pentafluoride |
Other cations
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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).
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Reactions
editDibromine trioxide can be prepared by reacting a solution of bromine in dichloromethane with ozone at low temperatures.[3][5]
It disproportionates in alkali solutions to Br−
and BrO−
3.[5]
References
edit- ^ Perry, Dale L.; Phillips, Sidney L. (1995), Handbook of Inorganic Compounds, CRC Press, p. 255, ISBN 0-8493-8671-3, retrieved 2015-08-25
- ^ a b Kuschel, Raimund; Seppelt, Konrad (1993). "Brombromat Br2O3". Angewandte Chemie. 105 (11). Wiley: 1734–1735. doi:10.1002/ange.19931051141. ISSN 0044-8249.
- ^ a b Henderson, K. M. Mackay; R. A. Mackay; W. (2002). Introduction to modern inorganic chemistry (6th ed.). Cheltenham: Nelson Thornes. ISBN 9780748764204.
{{cite book}}: CS1 maint: multiple names: authors list (link) - ^ Jansen, Martin; Kraft, Thorsten (1997). "The Structural Chemistry of Binary Halogen Oxides in the Solid State". Chemische Berichte. 130 (3). Wiley: 307–316. doi:10.1002/cber.19971300302. ISSN 0009-2940.
- ^ a b Wiberg, Egon (2001). Wiberg, Nils (ed.). Inorganic chemistry (1st ed.). San Diego, Calif.: Academic Press. p. 464. ISBN 9780123526519.
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