Iron(III) bromide is the chemical compound with the formula FeBr3.
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: Above 200 °C, FeBr3 decomposes to ferrous bromide: 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.
Ferric bromide is occasionally used as an oxidant in organic chemistry, e.g. for the conversion of alcohols to ketones.