Terbium(III) iodide explained

Terbium(III) iodide (TbI₃) is an inorganic chemical compound.

Preparation

Terbium(III) iodide can be produced by reacting terbium and iodine.^[1]

Terbium iodide hydrate can be crystallized from solution by reacting hydriodic acid with terbium, terbium(III) oxide, terbium hydroxide or terbium carbonate:

An alternative method is reacting terbium and mercury(II) iodide at 500 °C.

Structure

Terbium(III) iodide adopts the bismuth(III) iodide (BiI₃) crystal structure type,^{[2] [3]} with octahedral coordination of each Tb³⁺ ion by 6 iodide ions.

Notes and References

1. WebElements: Chemical reactions of the element Terbium
2. Book: A. F. . Wells . Structural Inorganic Chemistry . 5th . 1984 . Oxford University Press . 978-0-19-965763-6 . 421 .
3. L. B. . Asprey . T. K. . Keenan . F. H. . Kruse . Preparation and Crystal Data for Lanthanide and Actinide Triiodides . . 1964 . 3 . 8 . 1137–1141 . 10.1021/ic50018a015 .