Thulium(II) iodide explained

Thulium(II) iodide is an inorganic compound with the chemical formula TmI₂.

Preparation and properties

Thulium(II) iodide can be obtained by reacting thulium(III) iodide and alkali metals in a tantalum container at 700~800°C. TmI₂ can be obtained by using lithium and sodium as reducing agents, while potassium, rubidium and caesium can generate the perovskite structure MTmI₃.^[1] TmI₂ can also react directly with CsI (340 °C) to generate CsTmI₃.^[2]

Thulium(II) iodide can also be prepared by reacting thulium and mercury(I) iodide. The reaction process is as follows:

Notes and References

1. Schilling . Gaby . Kunert . Christine . Schleid . Thomas . Meyer . Gerd . Dec 1992 . Metallothermische Reduktion der Tribromide und -iodide von Thulium und Ytterbium mit Alkalimetallen . Zeitschrift für anorganische und allgemeine Chemie . 618 . 12 . 7–12 . 10.1002/zaac.19926180102 . 0044-2313.
2. 罗时敏,王世华.CsTmI₃生成机理及其相转变[J].物理化学学报,1990(01):93-96.