Thulium dibromide explained

Thulium dibromide is an inorganic compound, with the chemical formula of TmBr₂. It is a dark green solid that is easy to dissolve, with the SrI₂ structure and it needs to be stored in an inert atmosphere.

Preparation

Thulium dibromide can be prepared by reacting thulium with thulium tribromide at 800~900 °C in a vacuum.^[1] At high temperatures, the alkali metals can also obtain bromide, but only lithium and sodium reactions obtain thulium dibromide, and the response to the participation of potassium, rubidium, and caesium.^[2]

Notes and References

1. Georg Brauer (Hrsg.), unter Mitarbeit von Marianne Baudler u. a.: Handbuch der Präparativen Anorganischen Chemie. 3., umgearbeitete Auflage. Band I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6, S. 1081.
2. Schilling, Gaby; Kunert, Christine; Schleid, Thomas; Meyer, Gerd. Metallothermic reduction of the tribromides and triiodides of thulium and ytterbium by alkali metals. Zeitschrift fuer Anorganische und Allgemeine Chemie, 1992. 618: 7-12.