Bromine pentafluoride 2317016 220893909 2008-06-22T02:59:35Z 71.179.229.162 /* PreparationN. N. Greenwood, A. Earnshaw. Chemie prvku (Chemistry of the Elements). Informatorium, Prague, 1993. */ {{Chembox new | Name = Bromine pentafluoride | ImageFile = Bromine-pentafluoride-gas-2D-dimensions.png <!-- | ImageSize = 150px --> | ImageName = Structure and dimensions of the bromine pentafluoride molecule in the gas phase | ImageFile1 = Bromine-pentafluoride-3D-balls.png <!-- | ImageSize1 = 100px --> | ImageName1 = Ball-and-stick model of bromine pentafluoride | ImageFile2 = Bromine-pentafluoride-3D-vdW.png <!-- | ImageSize2 = 100px --> | ImageName2 = Space-filling model of bromine pentafluoride | IUPACName = Bromine pentafloride | Section1 = {{Chembox Identifiers | CASNo = 7789-30-2 }} | Section2 = {{Chembox Properties | Formula = BrF<sub>5</sub> | MolarMass = 174.894 g.mol<sup>−1</sup> | Appearance = Pale yellow solid | MeltingPt = −61.30 °C | BoilingPt = 40.25 °C }} | Section7 = {{Chembox Hazards | ExternalMSDS = [http://physchem.ox.ac.uk/MSDS/BR/bromine_pentafluoride.html External MSDS] | NFPA-H = 4 | NFPA-F = | NFPA-R = 3 | Other=OX | FlashPt = Non-flammable | RSPhrases = {{R2}} {{R23}} {{R24}} {{R25}} }} | Section8 = {{Chembox Related | OtherAnions = [[Bromine monochloride]] | OtherCations = [[Chlorine pentafluoride]]<br />[[Iodine pentafluoride]] | Function = [[compound]]s | OtherFunctn = [[Bromine monofluoride]]<br />[[Bromine trifluoride]] }} }} '''Bromine pentafluoride''', [[bromine|Br]][[fluorine|F<sub>5</sub>]], is an [[interhalogen]] [[chemical compound|compound]] and a [[fluoride]] of [[bromine]]. It is a strong [[fluorination]] reagent. It melts at −61.30 °C and boils at 40.25 °C. BrF<sub>5</sub> finds use in [[isotopes of oxygen|oxygen]] [[isotope analysis]]. [[Laser ablation]] of solid [[silicate]]s in the presence of bromine pentafluoride releases [[Oxygen#Allotropes|O<sub>2</sub>]] for subsequent analysis. ==Preparation<ref name="chemelem">N. N. Greenwood, A. Earnshaw. ''Chemie prvku'' (''Chemistry of the Elements''). Informatorium, Prague, 1993.</ref>== It was the first time prepared in 1930. It can be prepared by disproportionation of [[Bromine monofluoride|BrF]]: : 3 BrF → BrF<sub>3</sub> + Br<sub>2</sub> Preparation of larger quantities can be accomplished by reaction with temperature over 150 °C and an excess of fluorine: : Br<sub>2</sub> + 5 F<sub>2</sub> → 2 BrF<sub>5</sub> For preparation of smaller amounts can be used reaction: : KBr + 3 F<sub>2</sub> → KF + BrF<sub>5</sub> ==Reactions== Bromine pentafluoride reacts explosively with water by reaction: : BrF<sub>5</sub> + 3 H<sub>2</sub>O → HBrO<sub>3</sub> + 5 HF It is an extremely effective fluorinating agent, converting most uranium compounds to the hexafluoride at room temperature. ==References== <references/> ==External links== *{{ICSC|0974|09}} *{{PGCH|0065}} *[http://www.npi.gov.au/database/substance-info/profiles/44.html National Pollutant Inventory - Flouride and compounds fact sheet] [[Category:Fluorides]] [[Category:Bromine compounds]] [[Category:Interhalogen compounds]] [[pt:Pentafluoreto de bromo]]