Barium selenide is an inorganic compound, with the chemical formula of BaSe. It is a white solid although typically samples are colored owing to the effects of air oxidation.[3]

BaSe has the lowest energy band gap among alkaline earth chalcogenides.[4]

Preparation

Barium selenide can be obtained by the reduction of barium selenate in hydrogen flow:.[3][5]

BaSeO4 + H2 → BaSe + 4 H2O

It can also be obtained by reacting selenium with barium carbonate or barium oxide at high temperature:[citation needed]

2 BaCO3 + 5 Se → 2 BaSe + 3 SeO2 + CO2

Barium can also forms a series of polyselenide compounds, such as Ba2Se3, BaSe2 and BaSe3.[1]

References

  1. ^ a b Okamoto, H (August 1991). "The Ba-Se (Barium-Selenium) system". Journal of Phase Equilibria. 12 (4): 467–469. doi:10.1007/BF02645971. ISSN 1054-9714. S2CID 95845653.
  2. ^ "C&L Inventory". echa.europa.eu.
  3. ^ a b P. Ehrlich (1963). "Alkaline Earth Metals". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2pages=939. NY, NY: Academic Press.
  4. ^ V. V. Sobolev, D. А. Merzlyakov, V. Val. Sobolev (March 2017). "A Study of the Optical Properties of Barium Selenide Crystals. I. Fundamental Functions". Journal of Applied Spectroscopy. 84 (1): 59–65. Bibcode:2017JApSp..84...59S. doi:10.1007/s10812-017-0427-1. ISSN 0021-9037. S2CID 254609774. Retrieved 2018-08-09.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  5. ^ Handbuch der präparativen anorganischen Chemie Bd. 2. / Unter Mitarb. von M. Baudler ... Marianne Baudler (3., umgearb. Aufl ed.). Stuttgart. 1978. p. 949. ISBN 978-3-432-87813-3. OCLC 310719490.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)
Allikas: http://en.wikipedia.org/wiki/Barium_selenide
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