It is a red crystalline compound that is isostructural with β-TlI and has a distorted rock salt structure.

[1] Indium(I) bromide is generally made from the elements, heating indium metal with InBr3.

In organic chemistry, it has been found to promote the coupling of α, α-dichloroketones to 1-aryl-butane-1,4-diones.

[2] Oxidative addition reactions with for example alkyl halides to give alkyl indium halides[3] and with NiBr complexes to give Ni-In bonds are known.

When indium dibromide is dissolved in water, InBr is produced as a, presumably, insoluble red precipitate, that then rapidly decomposes.