Thulium dibromide

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.

Thulium dibromide
Names
Other names
Thulium(II) bromide
Identifiers
3D model (JSmol)
  • InChI=1S/2BrH.Tm/h2*1H;/q;;+2/p-2
    Key: AZLHTMVBZVOUEC-UHFFFAOYSA-L
  • [Tm+2].[Br-].[Br-]
Properties
TmBr2
Molar mass 328.74
Appearance dark green solid[1]
Melting point 619 °C[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

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]

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. ISSN 0044-2313


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