Thulium monoselenide
Appearance
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3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.031.711 |
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PubChemCID
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CompTox Dashboard(EPA)
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Properties | |
TmSe | |
Molar mass | 247.89 |
Density | 9.1 g/cm3 |
Melting point | 2,060 °C (3,740 °F; 2,330 K) |
Related compounds | |
Otheranions
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TmS TmTe |
Othercations
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ErSe YbSe |
Related compounds
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Tm2Se3 |
Except where otherwise noted, data are given for materials in theirstandard state(at 25 °C [77 °F], 100 kPa).
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Thulium monoselenideis a mixed valence[1]compound ofseleniumandthuliumwith the chemical formula TmSe.
Preparation
[edit]Thulium monoselenide can be prepared by directly reacting thulium and selenium:[2]
- Tm + Se → TmSe
Properties
[edit]Thulium monoselenide forms reddish-browncubiccrystals,[2]space groupFm3m,unit cellparameters a = 0.5640 nm, Z = 4, and a structure similar to that ofsodium chloride.[3][4][2]
The compound melts congruently at 2060 °C, and at 1100 °C and 1730 °C, phase transitions occur in the compound. TheNéel temperatureof thulium monoselenide is 1.85–2.8 K.[2]
References
[edit]- ^Kaindl, G.; Brewer, W. D.; Kalkowski, G.; Holtzberg, F. (1983-11-28)."$M$-Edge X-Ray Absorption Spectroscopy: A New Tool for Dilute Mixed-Valent Materials".Physical Review Letters.51(22): 2056–2059.doi:10.1103/PhysRevLett.51.2056.
- ^abcdBucher, E.; Andres, K.; di Salvo, F. J.; Maita, J. P.; Gossard, A. C.; Cooper, A. S.; Hull, G. W. (1975-01-01)."Magnetic and some thermal properties of chalcogenides of Pr and Tm and a few other rare earths".Physical Review B.11(1): 500–513.Bibcode:1975PhRvB..11..500B.doi:10.1103/PhysRevB.11.500.
- ^Predel, B. (1998),"Se-Tm (Selenium-Thulium)",Pu-Re – Zn-Zr,Landolt-Börnstein - Group IV Physical Chemistry, vol. 5 J, Berlin/Heidelberg: Springer-Verlag, pp. 1–2,doi:10.1007/10551312_2721,ISBN3-540-61742-6,retrieved2024-01-22
- ^Diagrammy sostojanija dvojnych metalličeskich sistem: spravočnik v trech tomach. 3,2.Moskva: Mašinostroenie. 2001.ISBN978-5-217-02932-7.