|Molar mass||136.90 g/mol|
|Density and phase||2.8 g/ml, liquid|
|Solubility in water||decomposes|
|Melting point||8.8 °C|
|Boiling point||125.8 °C|
|Viscosity||? cP at ? °C|
|Dipole moment||1.19 D|
|EU classification||not listed|
|Supplementary data page|
|n, εr, etc.|
Solid, liquid, gas
|Spectral data||UV, IR, NMR, MS|
|Other anions||Bromine monochloride|
|Other cations||Chlorine trifluoride|
|Related compounds||Bromine monofluoride|
|Except where noted otherwise, data are given for|
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references
Bromine trifluoride is a highly toxic and corrosive fluoride of bromine with chemical formula BrF3. It was discovered by Paul Lebeau in 1906. It occurs as a colorless, yellow, or gray fuming liquid with an irritating odor. It is soluble in sulfuric acid but may explode on contact with water.
- Br2 + 3F2 → 2BrF3
- 3BrF → BrF3 + Br2
Like ClF3 and IF3 the BrF3 molecule is T-shaped. With the two electron pairs the coordination number is 5. The distance from the bromine each axial fluorine is 1.81 Å and to the equatorial fluorine is 1.72 Å. The angle between an axial fluorine and the equatorial fluorine is slightly smaller than 90° — the 86.2° angle observed is due to the replusion generated by the electron pairs being greater than that of the Br-F bonds.
- Lebeau P. (1906). "The effect of fluorine on chloride and on bromine". Annales de Chimie et de Physique. 9: 241–263.
- Simons JH (1950). "Bromine (III) Fluoride - Bromine Trifluoride". Inorganic Synthesis. 3: 184–186.
- Gutmann V (1950). "Die Chemie in Bromtrifuoride". Angewante Chemie. 62: 312–315.
- Meinert H (1967). "Interhalogenverbindungen". Zeitschrift für Chemie. 7: 41.