Dibromine trioxide
Chemical compound
From Wikipedia, the free encyclopedia
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 | |
| 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° | |
| Related compounds | |
Other anions |
Bromine dioxide 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).
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Reactions
Dibromine 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]
