Bromine trifluoride


Bromine trifluoride

Chembox new
ImageFile = Bromine-trifluoride-3D-vdW.png ImageSize = 150px
ImageName = Bromine trifluoride
Section2 = Chembox Properties
Formula = BrF3
MolarMass = 136.90 g/mol
Appearance = straw-coloured liquid
Density = 2.8 g/ml, liquid
Solubility = "decomposes"
MeltingPt = 8.8 °C
BoilingPt = 125.8 °C
Viscosity =

Section3 = Chembox Structure
MolShape = T-shaped
Dipole = 1.19 D

Section7 = Chembox Hazards
ExternalMSDS =
EUClass = not listed
NFPA-H = 3
NFPA-F =
NFPA-R = 3 | NFPA-O = OX

Section8 = Chembox Related
OtherAnions = Bromine monochloride
OtherCations = Chlorine trifluoride
Iodine trifluoride
OtherCpds = Bromine monofluoride
Bromine pentafluoride

Bromine trifluoride is the inorganic compound with the formula BrF3. This toxic, colourless, and corrosive liquid is soluble in sulfuric acid but explodes on contact with water and organic compounds. It is a potent fluorinating agent and an ionizing inorganic solvent. It is used to produce uranium hexafluoride, UF6 in the processing and reprocessing of nuclear fuel.Greenwood&Earnshaw]

ynthesis

Bromine trifluoride was first described by Paul Lebeau in 1906, who obtained the material by the reaction of bromine with fluorine at 20 °C:cite journal | author= Lebeau P. | title= The effect of fluorine on chloride and on bromine | journal=Annales de Chimie et de Physique| year=1906 | volume=9 | pages=241–263] :Br2 + 3 F2 → 2 BrF3

The disproportionation of bromine monofluoride also gives bromine trifluoride:cite journal | author= Simons JH| title= Bromine (III) Fluoride - Bromine Trifluoride | journal=Inorganic Synthesis| year=1950 | volume=3 | pages=184–186| doi= 10.1002/9780470132340.ch48] :3 BrF → BrF3 + Br2

tructure

Like ClF3 and IF3 the BrF3 molecule is T-shaped. In the VSEPR formalism, the bromine center is assigned two electron pairs leading to a coordination number of 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 repulsion generated by the electron pairs being greater than that of the Br-F bonds.cite journal | author= Gutmann V| title= Die Chemie in Bromtrifuoride | journal=Angewante Chemie| year=1950 | volume=62 | pages=312–315| doi= 10.1002/ange.19500621305] cite journal | author= Meinert H| title= Interhalogenverbindungen | journal=Zeitschrift für Chemie| year=1967 | volume=7 | pages=41]

Chemical properties

BrF3 is a fluorinating agent, but less reactive than ClF3. The liquid is conducting, owing to "autoionization"::2 BrF3 unicode| BrF2+ + BrF4Many ionic fluorides dissolve readily in BrF3 forming solvobases e.g. :KF + BrF3 → KBrF4

References

External links

* [http://webbook.nist.gov/cgi/cbook.cgi?ID=C7787715 WebBook page for BrF3]


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • bromine trifluoride — noun A particular kind of toxic, corrosive liquid that is solube in sulfuric acid, and is used to make uranium hexofluoride …   Wiktionary

  • Bromine trifluoride (data page) — This page provides supplementary chemical data on bromine trifluoride. Material Safety Data Sheet The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for… …   Wikipedia

  • Bromine pentafluoride — Chembox new Name = Bromine pentafluoride ImageFile = Bromine pentafluoride gas 2D dimensions.png ImageName = Structure and dimensions of the bromine pentafluoride molecule in the gas phase ImageFile1 = Bromine pentafluoride 3D balls.png… …   Wikipedia

  • Chlorine trifluoride — Systematic name …   Wikipedia

  • Phosphorus trifluoride — Chembox new Name = Phosphorus trifluoride ImageFile = Phosphorus trifluoride 2D dimensions.png ImageName = Phosphorus trifluoride ImageFile1 = Phosphorus trifluoride 3D vdW.png ImageName1 = Phosphorus trifluoride IUPACName = Phosphorus… …   Wikipedia

  • Interhalogen — The halogens react with each other to form interhalogen compounds.The general formula of most interhalogen compounds is XYn, where n = 1, 3, 5 or 7 (X is the less electronegative of the two halogens). They are all prone to hydrolysis, and ionise… …   Wikipedia

  • List of inorganic compounds — Tentative listing related to this page, inorganic compounds by element (presently under construction), as well as . This list is not necessarily complete or up to date ndash; if you see an article that should be here but isn t (or one that… …   Wikipedia

  • Трифторид брома — Общие Систематическое наименование Фторид брома (III) Химическая формула …   Википедия

  • Фторид брома(III) — Фторид брома(III) …   Википедия

  • Protactinium — thorium ← protactinium → uranium Pr ↑ Pa ↓ …   Wikipedia