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Thorium diselenide

From Wikipedia, the free encyclopedia
Thorium diselenide
Identifiers
3D model (JSmol)
ECHA InfoCard100.056.718Edit this at Wikidata
EC Number
  • 262-410-8
  • InChI=1S/2Se.Th
    Key: CDRIOKBKMKFSNO-UHFFFAOYSA-N
  • [Se].[Se].[Th]
Properties
Se2Th
Molar mass389.980 g·mol−1
Appearancedark purple-grey[1]
Density8.4 g/cm3
Melting pointdecomposes
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa).
Chemical compound

Thorium diselenide is aninorganic compound with the chemical formula ThSe2. It is one of theselenides ofthorium.[2] It was first obtained in 1896 through the reaction ofthorium carbide andselenium vapour.

Preparation

[edit]

Thorium 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]
  1. ^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.
  2. ^abDavid 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
  3. ^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.
Th(II)
Th(III)
Th(IV)
Salts and covalent derivatives of theselenide ion
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