Erbium(III) iodide

Erbium(III) iodide is an iodide of lanthanide metal erbium. The compound is insoluble in water and is white to slightly pink in appearance.

Preparation
Erbium(III) iodide can be produced by the reaction of elemental iodine and finely divided erbium by the following equation:

Properties
Erbium(III) iodide has a trigonal crystal structure with space group R$\overline{3}$ (space group no. 148).