Iron(III) bromide: Difference between revisions
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| verifiedrevid = |
| verifiedrevid = 432513245 |
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| ImageFile = Bismuth-triiodide-layer-3D-balls.png |
| ImageFile = Bismuth-triiodide-layer-3D-balls.png |
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| ImageFile1 = Bismuth-triiodide-layers-stacking-3D-balls.png |
| ImageFile1 = Bismuth-triiodide-layers-stacking-3D-balls.png |
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| ImageFile2= YBr3structure.jpg |
| ImageFile2 = YBr3structure.jpg |
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| IUPACName = Iron(III) bromide |
| IUPACName = Iron(III) bromide |
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| OtherNames = Ferric bromide <br/> Iron tribromide |
| OtherNames = Ferric bromide <br/> Iron tribromide <br/> tribromoiron |
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|Section1={{Chembox Identifiers |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo = 10031-26-2 |
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| CASNo = 10031-26-2 |
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| UNII_Ref = {{fdacite|correct|FDA}} |
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| UNII = 9RDO128EH7 |
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| EINECS = 233-089-1 |
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| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} |
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| ChemSpiderID = 23830 |
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| SMILES = [Fe](Br)(Br)Br |
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| InChI = 1/3BrH.Fe/h3*1H;/q;;;+3/p-3 |
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| InChIKey = FEONEKOZSGPOFN-DFZHHIFOAP |
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| StdInChI_Ref = {{stdinchicite|correct|chemspider}} |
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| StdInChI = 1S/3BrH.Fe/h3*1H;/q;;;+3/p-3 |
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| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}} |
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| StdInChIKey = FEONEKOZSGPOFN-UHFFFAOYSA-K |
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|Section2={{Chembox Properties |
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| Formula = FeBr<sub>3</sub> |
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| MolarMass = 295.56 g mol<sup>−1</sup> |
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| Appearance = brown solid |
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| Odor = odorless |
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| Density = 4.50 g cm<sup>−3</sup> |
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| MeltingPtC = 200 |
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| MeltingPt_notes = (decomposes) |
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|Section3={{Chembox Structure |
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| CrystalStruct = [[Trigonal]], [[Pearson symbol|hR24]] |
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| SpaceGroup = R-3, No. 148 |
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| GHS_ref=<ref>{{cite web |title=C&L Inventory |url=https://echa.europa.eu/information-on-chemicals/cl-inventory-database/-/discli/details/3946 |website=echa.europa.eu}}</ref> |
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| GHSPictograms = {{GHS07}} |
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| GHSSignalWord = Warning |
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| HPhrases = {{H-phrases|315|319|335}} |
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| PPhrases = {{P-phrases|}} |
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| RPhrases = {{R36/37/38}} |
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| SPhrases = {{S26}} {{S37/39}} |
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'''Iron(III) bromide''' is the [[chemical compound]] with the [[chemical formula|formula]] FeBr<sub>3</sub>. Also known as ferric bromide, this red-brown compound is used as a [[Lewis acid]] [[catalyst]] in the [[ |
'''Iron(III) bromide''' is the [[chemical compound]] with the [[chemical formula|formula]] FeBr<sub>3</sub>. Also known as '''ferric bromide''', this red-brown odorless compound is used as a [[Lewis acid]] [[catalyst]] in the [[Electrophilic halogenation|halogenation]] of [[aromatic compounds]]. It dissolves in water to give acidic solutions. |
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==Structure, synthesis and basic properties== |
==Structure, synthesis and basic properties== |
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FeBr<sub>3</sub> forms a polymeric structure featuring six-coordinate, [[octahedral]] Fe centers.<ref name=Holleman>Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN |
FeBr<sub>3</sub> forms a polymeric structure featuring six-coordinate, [[octahedral]] Fe centers.<ref name=Holleman>Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. {{ISBN|0-12-352651-5}}.</ref> Although inexpensively available commercially, FeBr<sub>3</sub> can be prepared by treatment of iron metal with [[bromine]]: |
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:2 Fe + 3 Br<sub>2</sub> → 2 FeBr<sub>3</sub> |
:2 Fe + 3 Br<sub>2</sub> → 2 FeBr<sub>3</sub> |
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Above 200 |
Above 200 °C, FeBr<sub>3</sub> decomposes to [[Iron(II) bromide|ferrous bromide]]: |
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:2FeBr<sub>3</sub> |
:2FeBr<sub>3</sub> → 2FeBr<sub>2</sub> + Br<sub>2</sub> |
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[[Iron(III) chloride]] is considerably more stable, reflecting the greater oxidizing power of [[chlorine]]. |
[[Iron(III) chloride]] is considerably more stable, reflecting the greater oxidizing power of [[chlorine]]. FeI<sub>3</sub> is not stable, as iron(III) will oxidize iodide ions. |
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==Uses== |
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Ferric bromide is occasionally used as an oxidant in [[organic chemistry]], e.g. for the conversion of [[alcohols]] to ketones. It is used as a [[Lewis acid]]ic catalyst for bromination of aromatic compounds. For the latter applications, it is often generated in situ.<ref>{{cite journal|title=Iron(III) bromide|author1=Drapeau, Martin Pichette |author2=Lafantaisie, Mathieu |author3=Ollevier, Thierry |journal=E-EROS Encyclopedia of Reagents for Organic Synthesis|year=2013|doi=10.1002/047084289X.rn01568|isbn=978-0471936237}}</ref> |
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==See also== |
==See also== |
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==References== |
==References== |
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{{reflist}} |
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<references/> |
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{{Iron compounds}} |
{{Iron compounds}} |
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{{bromine compounds}} |
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[[Category:Iron compounds]] |
[[Category:Iron(III) compounds]] |
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[[Category:Bromides]] |
[[Category:Bromides]] |
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[[Category:Metal halides]] |
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{{inorganic-compound-stub}} |
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[[ar:بروميد الحديد الثلاثي]] |
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[[de:Eisen(III)-bromid]] |
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[[nl:IJzer(III)bromide]] |
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[[ja:臭化鉄(III)]] |
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[[pt:Brometo de ferro (III)]] |
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[[ru:Бромид железа(III)]] |
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[[zh:溴化铁]] |