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| Properties | |
| Chemical formula | Se3Tm2 |
| Molar mass | 574.781 g·mol |
| Appearance | light brown or black solid |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references | |
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:
- 2 Tm + 3 Se → Tm2Se3
It can also be prepared by reacting thulium oxide and hydrogen selenide at high temperature:
- Tm2O3 + 3 H2Se → Tm2Se3 + 3 H2O
Thulium(III) selenide is also generated in the thermal decomposition of (py)3Tm(SePh)3.
Preparation
In the binary system of thulium(III) selenide and antimony triselenide, TmSb3Se6, Tm6Sb8Se21, TmSbSe3 and Tm8Sb2Se15 can be formed.
References
- 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.
- ^ 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.
- ^ 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.
- 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..
| Thulium compounds | |
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| Tm(II) | |
| Tm(III) | |
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