Thulium(III) selenide
Identifiers
ChemSpider
InChI=1S/3Se.2Tm/q3*-2;2*+3
Key: TUWAHSUSQXPMCI-UHFFFAOYSA-N
[Se-2].[Se-2].[Se-2].[Tm+3].[Tm+3]
Properties
Se 3 Tm 2
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).
Chemical compound
Thulium(III) selenide is an inorganic compound with the chemical formula Tm2 Se3 .
Preparation
Thulium(III) selenide can be obtained by the reaction of thulium and selenium :[3]
2 Tm + 3 Se → Tm2 Se3
It can also be prepared by reacting thulium oxide and hydrogen selenide at high temperature:[3]
Tm2 O3 + 3 H2 Se → Tm2 Se3 + 3 H2 O
Thulium(III) selenide is also generated in the thermal decomposition of (py)3 Tm(SePh)3 .[2]
Preparation
In the binary system of thulium(III) selenide and antimony triselenide , TmSb3 Se6 , Tm6 Sb8 Se21 , TmSbSe3 and Tm8 Sb2 Se15 can be formed.[4]
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 .
^ 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 .
^ a b Guittard, Micheline; Benacerraf, A.; Flahaut, J. (1964). "Selenides L2 Se3 and L2 Se4 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 . .
Salts and covalent derivatives of the
selenide ion