Iron(III) bromide

Names
IUPAC name

Iron(III) bromide

Other names

Ferric bromide
Iron tribromide
tribromoiron

Identifiers

CAS Number

* 10031-26-2 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 23830 Y

EC Number |

* 233-089-1

PubChem CID

* 25554

UNII |

* 9RDO128EH7 Y

InChI

* InChI=1S/3BrH.Fe/h3*1H;/q;;;+3/p-3 Y

Key: FEONEKOZSGPOFN-UHFFFAOYSA-K N

* InChI=1/3BrH.Fe/h3*1H;/q;;;+3/p-3

Key: FEONEKOZSGPOFN-DFZHHIFOAP

SMILES

* [Fe](Br)(Br)Br

Properties

Chemical formula

| FeBr3
Molar mass | 295.56 g mol−1
Appearance  | brown solid
Odor | odorless
Density | 4.50 g cm−3
Melting point |  200 °C (392 °F; 473 K) (decomposes)
Structure

Crystal structure

| Trigonal, hR24

Space group

| R-3, No. 148
Hazards
Main hazards | corrosive
GHS pictograms |
GHS Signal word | Warning

GHS hazard statements

| H315, H319, H335
NFPA 704 (fire diamond)  |

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

N verify (what is YN ?)
Infobox references

Iron(III) bromide is the chemical compound with the formula FeBr3. Also known as ferric bromide, this red-brown odorless compound is used as a Lewis acid catalyst in the halogenation of aromatic compounds. It dissolves in water to give acidic solutions.

## Contents

* 1 Structure, synthesis and basic properties
* 2 Uses
* 3 See also
* 4 References

## Structure, synthesis and basic properties

FeBr3 forms a polymeric structure featuring six-coordinate, octahedral Fe centers.[2] Although inexpensively available commercially, FeBr3 can be prepared by treatment of iron metal with bromine:

2 Fe + 3 Br2 → 2 FeBr3

Above 200 °C, FeBr3 decomposes to ferrous bromide:

2FeBr3 → 2FeBr2 \+ Br2

Iron(III) chloride is considerably more stable, reflecting the greater oxidizing power of chlorine. FeI3 is not stable, as iron(III) will oxidize iodide ions.

## Uses

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 acidic catalyst for bromination of aromatic compounds. For the latter applications, it is often generated in situ.[3]

## See also

* Iron(II) bromide, the lower bromide of iron

## References

1. ↑ "C&L Inventory". https://echa.europa.eu/information-on-chemicals/cl-inventory-database/-/discli/details/3946.
2. ↑ Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.
3. ↑ Drapeau, Martin Pichette; Lafantaisie, Mathieu; Ollevier, Thierry (2013). "Iron(III) bromide". E-EROS Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rn01568. ISBN 978-0471936237.

* v
* t
* e

Iron compounds

Fe(-II)|

* Na2Fe(CO)4

Fe(0)|

* Fe(CO)5
* Fe2(CO)9
* Fe3(CO)12
* Fe(CO)3CH3COC2H2C6H6

Fe(I)|

* FeH

| Organoiron(I) compounds|

* (C5H5FeCO)2(CO)2

|

Fe(0,II)|

* Fe3C

Fe(II)|

* FeBr2
* FeCl2
* FeF2
* FeI2
* FeH2
* FeMoO4
* FeO
* Fe(OH)2
* FeS
* FeSO4
* FeSe
* FeSeO4
* FeSi2
* FeTiO3
* FeCO3
* FeC2O4
* Fe(C2H3O2)2
* Fe(C3H5O3)2
* FeC6H6O7
* FeC12H22O14
* Fe2CrO4
* Fe3(PO4)2
* H2Fe(CO)4
* Fe(HCO3)2
* Mg2FeH6

| Organoiron(II) compounds|

* Fe(C5H5)2
* Fe(C5H4P(C6H5)2)2
* C4H4Fe(CO)3
* C4H6Fe(CO)3

|

Fe(0,III)|

* Fe3P

Fe(II,III)|

* Fe3O4
* Fe3S4

Fe(III)|

* FeBr3
* FeCl3
* FeF3
* FeI3
* Fe(NO3)3
* Fe(acac)3
* FeOCl
* FeO(OH)
* FePO4
* Fe4(P2O7)3
* Fe2(CrO4)3
* Fe2(C2O4)3
* Fe2O3
* Fe2S3
* Fe2(SO4)3
* FeBO3
* FeB

| Organoiron(III) compounds|

* Fe(C5H5)2BF4
* C6H8O7⋅xFe3+⋅yNH3

|

Fe(VI)|

* K2FeO4
* BaFeO4

* v
* t
* e

Bromine compounds

* AgBr
* AlBr3
* AmBr3
* AsBr3
* AuBr3
* BBr3
* B2Br4
* BaBr2
* BeBr2
* BiBr3
* BrCl
* CsBr
* BrF3
* BrF5
* HBr
* IBr
* KBr
* LiBr
* BrN3
* NaBr
* BrO2
* RbBr
* TlBr
* CaBr2
* CdBr2
* CoBr2
* CuBr2
* EuBr2
* FeBr2
* GeBr2
* HgBr2
* Hg2Br2
* MgBr2
* MnBr2
* NiBr2
* Br2O
* Br2O3
* Br2O5
* PbBr2
* PdBr2
* PtBr2
* RaBr2
* S2Br2
* Se2Br2
* SnBr2
* SrBr2
* TeBr2
* YbBr2
* ZnBr2
* CeBr3
* CrBr3
* CsBr3
* DyBr3
* ErBr3
* EuBr3
* FeBr3
* GaBr3
* GdBr3
* HoBr3
* InBr
* InBr3
* IrBr3
* LaBr3
* LuBr3
* MoBr3
* NBr3
* NdBr3
* PBr3
* PrBr3
* ReBr3
* SbBr3
* SmBr3
* TbBr3
* TmBr3
* UBr3
* VBr3
* YBr3
* YbBr3
* GeBr4
* HfBr4
* PbBr4
* SeBr4
* SiBr4
* SnBr4
* TeBr4
* ThBr4
* TiBr4
* UBr4
* WBr4
* ZrBr4
* NbBr5
* PBr5
* TaBr5
* UBr5
* WBr5
* CBr4
* CrBr2
* DyBr2
* HfBr2
* HfBr3

Chemical formulas

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*[CID]: Compound ID
*[H315]: Causes skin irritation
*[H319]: Causes serious eye irritation
*[H335]: May cause respiratory irritation
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