Bromine dioxide

Structural formula
General
Surname	Bromine dioxide
other names	Bromate bromate (dimer)
Molecular formula	BrO 2
Brief description	yellow solid at low temperature
External identifiers / databases
CAS number 21255-83-4 PubChem 5460629 Wikidata Q3305849
properties
Molar mass	111.90 g mol −1
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Bromine dioxide is a chemical compound from the group of bromine oxides .

Extraction and presentation

Bromine dioxide can be obtained by ozonizing bromine in trichlorofluoromethane or by the action of a glow discharge on a bromine- oxygen mixture at low temperatures.

${\displaystyle \mathrm {Br_{2}+2\ O_{2}\longrightarrow 2\ BrO_{2}} }$

It was first isolated in 1937 by R. Schwarz and M. Schmeißer.

properties

Bromine dioxide is a solid yellow substance at low temperatures. It is dimeric and has no definite melting point, but decomposes into bromine and oxygen at a temperature around 0 ° C. If heated too quickly, an explosion can occur.

Individual evidence

1. ↑ ^{a b c} Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 317.
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ↑ Holger SP Müller, Charles E. Miller, Edward A. Cohen: The rotational spectrum and molecular properties of bromine dioxide, OBrO. In: The Journal of Chemical Physics. 107, 1997, p. 8292, doi : 10.1063 / 1.475030 .