Indium(III) bromide

Indium tribromide

Names
IUPAC name Indium(III) bromide
Identifiers
CAS Number	13465-09-3 Y
ECHA InfoCard	100.033.343
EC Number	236-692-8
PubChem	26046
Properties
Chemical formula	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)
Solubility in water	414 g/100 mL at 20 °C
Magnetic susceptibility (χ)	−107.0·10−6 cm3/mol
Structure
Crystal structure	Monoclinic, mS16
Space group	C12/m1, No. 12
Thermochemistry
Std enthalpy of formation (ΔfHo298)	-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).
Y  (what is YN ?)
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.