Dibromine trioxide

Dibromine trioxide
Names
IUPAC name
Dibromine trioxide
Other names
Bromine trioxide
Bromine bromate
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/Br2O3/c1-5-2(3)4
    Key: XLGPPSYTBHJSNE-UHFFFAOYSA-N
  • BrO[Br](=O)=O
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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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]

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]

References

  1. ^ Perry, Dale L.; Phillips, Sidney L. (1995), Handbook of Inorganic Compounds, CRC Press, p. 255, ISBN 0-8493-8671-3, retrieved 2015-08-25
  2. ^ a b Kuschel, Raimund; Seppelt, Konrad (1993). "Brombromat Br2O3". Angewandte Chemie. 105 (11). Wiley: 1734–1735. doi:10.1002/ange.19931051141. ISSN 0044-8249.
  3. ^ 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)
  4. ^ 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.
  5. ^ 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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