Thulium(III) selenide

Thulium(III) selenide
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/3Se.2Tm/q3*-2;2*+3
    Key: TUWAHSUSQXPMCI-UHFFFAOYSA-N
  • [Se-2].[Se-2].[Se-2].[Tm+3].[Tm+3]
Properties
Se3Tm2
Molar mass 574.781 g·mol−1
Appearance light brown[1] or black solid[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Thulium(III) selenide is an inorganic compound with the chemical formula Tm2Se3.

Preparation

Thulium(III) selenide can be obtained by the reaction of thulium and selenium:[3]

2 Tm + 3 Se → Tm2Se3

It can also be prepared by reacting thulium oxide and hydrogen selenide at high temperature:[3]

Tm2O3 + 3 H2Se → Tm2Se3 + 3 H2O

Thulium(III) selenide is also generated in the thermal decomposition of (py)3Tm(SePh)3.[2]

Preparation

In the binary system of thulium(III) selenide and antimony triselenide, TmSb3Se6, Tm6Sb8Se21, TmSbSe3 and Tm8Sb2Se15 can be formed.[4]

References

  1. ^ K.-J. Range, Ch. Eglmeier (August 1991). "Crystal data for rare earth sesquiselenides Ln2Se3 (Ln ≡ Ho, Er, Tm, Yb, Lu) and structure refinement of Er2Se3". Journal of the Less Common Metals. 171 (1): L27 – L30. doi:10.1016/0022-5088(91)90254-2. Retrieved 2023-06-13.
  2. ^ a b Jongseong Lee; Meggan Brewer; M. Berardini; J. G. Brennan (June 1995). "Trivalent Lanthanide Chalcogenolates: Synthesis, Structure, and Thermolysis Chemistry". Inorganic Chemistry. 34 (12): 3215–3219. doi:10.1021/ic00116a013. ISSN 0020-1669. Retrieved 2023-06-13.
  3. ^ a b Guittard, Micheline; Benacerraf, A.; Flahaut, J. (1964). "Selenides L2Se3 and L2Se4 of rare earth elements". Ann. Chim. 9 (1–2). Paris: 25–34. CAN61: 38017.
  4. ^ Sadygov, F. M.; Dzhafarova, E. K.; Einullaev, A. V. (2002). "Phase equilibria of the Sb2Se3-Tm2Se3 system". Zhurnal Neorganicheskoi Khimii. 47 (12): 2052–2054. ISSN 0044-457X..

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