 | |
| Names | |
|---|---|
| IUPAC name Dibromine trioxide | |
| Other names Bromine trioxide Bromine bromate | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| |
| |
| 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 | |
Otheranions | Bromine dioxide Bromine trifluoride Bromine pentafluoride |
Othercations | Oxygen difluoride Dichlorine monoxide Chlorine dioxide Iodine dioxide |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Dibromine trioxide is thechemical compound composed ofbromine andoxygen with theformula Br2O3. It is an orange solid that is stable below −40 °C. It has the structure Br−O−BrO2 (brominebromate).[3] It was discovered in 1993.[2] Thebond 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−OBrO2bond length is 1.845Å, the O−BrO2 bond length is 1.855 Å and the Br=O bond length is 1.612 Å.[4]
Dibromine trioxide can be prepared by reacting a solution of bromine indichloromethane withozone at low temperatures.[3][5] Itdisproportionates inalkali solutions toBr−
andBrO−
3.[5]
{{cite book}}: CS1 maint: multiple names: authors list (link)