Dibromine trioxide

Dibromine trioxide

Names
IUPAC name Dibromine trioxide
Other names Bromine trioxide
Identifiers
CAS Number	53809-75-9 Y
Properties
Chemical formula	Br2O3
Molar mass	207.806 g/mol
Appearance	orange needles
Melting point	decomposes around -40°C
Vapor pressure	{{{value}}}
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).
N (what is YN ?)
Infobox references

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). The Br-O-Br bond is bent with bond angle 111.2° and the Br-O-BrO₂ bond length is 1.85Å.

Reactions

Dibromine trioxide can be prepared by reacting a solution of bromine in dichloromethane with ozone at low temperatures. It disproportionates in alkali solutions to Br⁻
and BrO⁻
₃.