Indium(III) bromide

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.^[2]

Indium tribromide^[1]

Names
IUPAC name Indium(III) bromide
Identifiers
CAS Number	13465-09-3 Y
3D model (JSmol)	Interactive image
ChemSpider	24260
ECHA InfoCard	100.033.343
EC Number	236-692-8
PubChem CID	26046
UNII	0099V88160 Y
CompTox Dashboard (EPA)	DTXSID5065485
InChI InChI=1S/3BrH.In/h3*1H;/q;;;+3/p-3 Key: JKNHZOAONLKYQL-UHFFFAOYSA-K
SMILES Br[In](Br)Br
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 (ΔfH⦵298)	−428.9 kJ·mol−1
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314, H315, H319, H335
Precautionary statements	P260, P261, P264, P271, P280, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P363, P403+P233, P405, P501
Related compounds
Other cations	indium(III) fluoride indium(III) chloride indium(III) iodide
Related compounds	Indium(I) bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Structure

It has the same crystal structure as aluminium trichloride, with 6 coordinate indium atoms.^[3] When molten it is dimeric, In₂Br₆, and predominantly dimeric in the gas phase. The dimer has bridging bromine atoms with a structure similar to dimeric aluminium trichloride Al₂Cl₆.^[3]

Preparation and reactions

It is formed by the reaction of indium and bromine.^[4] InBr₃ forms complexes with ligands, L, InBr₃L, InBr₃L₂, InBr₃L₃.^[3]

Reaction with indium metal forms lower valent indium bromides, InBr₂, In₄Br₇, In₂Br₃, In₅Br₇, In₇Br₉, indium(I) bromide.^[5][6][7][8] In refluxing xylene solution InBr₃ and In metal react to form InBr₂.^[9]