Thorium diselenide is an inorganic compound with the chemical formula ThSe2. It is one of the selenides of thorium.[2] It was first obtained in 1896 through the reaction of thorium carbide and selenium vapour.
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3D model (JSmol)
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| ECHA InfoCard | 100.056.718 |
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| Properties | |
| Se2Th | |
| Molar mass | 389.980 g·mol−1 |
| Appearance | dark purple-grey[1] |
| Density | 8.4 g/cm3 |
| Melting point | decomposes |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation
editThorium diselenide can be prepared by the high-temperature reaction of thorium and selenium:[2]
- Th + 2 Se → ThSe2
It can also be obtained by the thermal decomposition of phenylselenol thorium pyridine compound.[3]
References
edit- ^ Graham, J; McTaggart, Fk (1960). "Observations on the systems Th-S, Th-Se and Th-Te". Australian Journal of Chemistry. 13 (1): 67. doi:10.1071/CH9600067. ISSN 0004-9425.
- ^ a b David Brown, Horst Wedemeyer. Th Thorium: Compounds with S, Se, Te and B. Gmelin Handbook Th Suppl. Vol. C5. 2013. 11.1.5 Thorium Diselenide, ThSe2. ISBN 9783662063422
- ^ Rehe, David; Kornienko, Anna Y.; Emge, Thomas J.; Brennan, John G. (2016-07-18). "Thorium Compounds with Bonds to Sulfur or Selenium: Synthesis, Structure, and Thermolysis". Inorganic Chemistry. 55 (14): 6961–6967. doi:10.1021/acs.inorgchem.6b00645. ISSN 0020-1669. PMID 27376981.