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Indium(III) bromide

Indium tribromide
Aluminium-trichloride-crystal-3D-balls.png
Names
IUPAC name
Indium(III) bromide
Identifiers
13465-09-3 YesY
ECHA InfoCard 100.033.343
EC Number 236-692-8
PubChem 26046
Properties
InBr3
Molar mass 354.530 g/mol
Appearance hygroscopic yellow-white monoclinic crystals
Density 4.74 g/cm3
Melting point 420 °C (788 °F; 693 K)
414 g/100 mL at 20 °C
−107.0·10−6 cm3/mol
Structure
Monoclinic, mS16
C12/m1, No. 12
Thermochemistry
-428.9 kJ·mol−1
Related compounds
Other cations
indium(III) fluoride
indium(III) chloride
indium(III) iodide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
YesY  (what is YesYN ?)
Infobox references

Indium(III) bromide, (indium tribromide), InBr3, is a chemical compound of indium and bromine. It is a Lewis acid and has been used in organic synthesis.

It has the same crystal structure as aluminium trichloride, with 6 coordinate indium atoms. When molten it is dimeric, In2Br6, and it is predominantly dimeric in the gas phase. The dimer has bridging bromine atoms with a structure similar to dimeric aluminium trichloride Al2Cl6.

It is formed by the reaction of indium and bromine. InBr3 forms complexes with ligands, L, InBr3L, InBr3L2, InBr3L3.

Reaction with indium metal forms lower valent indium bromides, InBr2, In4Br7, In2Br3, In5Br7, In7Br9, indium(I) bromide. In refluxing xylene solution InBr3 and In metal react to form InBr2.



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