Chemistry:Cerium monoselenide

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Cerium monoselenide
NaCl polyhedra.svg
Identifiers
3D model (JSmol)
Properties
CeSe
Appearance purple solid[1]
Structure
NaCl-type (cubic)
Fm3m (No. 225)
Related compounds
Other anions
Cerium monosulfide
Cerium monotelluride
Related compounds
Cerium selenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Cerium monoselenide is an inorganic compound with the chemical formula CeSe. It exists in the form of Ce3+Se2−(e).[2]

Preparation

Cerium monoselenide can be obtained by reducing cerium selenide with metallic sodium at 600 °C (or calcium at 1000 °C):[2]

Ce2Se3 + 2Na → 2CeSe + Na2Se

The reduction of cerium selenide by cerium dihydride can also produce cerium monoselenide:[1]

Ce2Se3 + CeH2 → 3 CeSe + H2

Properties

Like many other rare earth monochalcogenides, Cerium monoselenide has metallic-type electrical conductivity and a NaCl-type crystal structure.[3]

References

  1. 1.0 1.1 Obolonchik, V. A.; Mikhlina, T. M. Synthesis of rare earth metal monoselenides(in Russian). Izvestiya Akademii Nauk SSSR, Neorganicheskie Materialy, 1968. 4(2): 287-8. ISSN:0002-337X
  2. 2.0 2.1 洪广言. 现代化学基础丛书 第36卷 稀土化学导论. 北京: 科学出版社, 2014. pp. 62-63. 2. 稀土硒化物 ISBN 978-7-03-040581-4
  3. Smolensky, G. A.; Adamjan, V. E.; Loginov, G. M. (1968-02-01). "Antiferromagnetic Properties of Light Rare Earth Monochalcogenides". Journal of Applied Physics (AIP Publishing) 39 (2): 786–790. doi:10.1063/1.2163619. ISSN 0021-8979. 

category:Selenides