Barium selenide
From Wikipedia the free encyclopedia
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| Identifiers | |
|---|---|
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.013.755 |
| EC Number |
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PubChem CID | |
| UNII | |
CompTox Dashboard (EPA) | |
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| Properties | |
| BaSe | |
| Molar mass | 216.298 g·mol−1 |
| Appearance | white solid |
| Structure[1] | |
| NaCl type (cubic) | |
| Fm3m (No. 225) | |
a = 662.9 pm | |
Formula units (Z) | 4 |
| Hazards | |
| GHS labelling:[2] | |
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| Danger | |
| H301, H331, H373, H410 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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[edit]
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
Related compounds[edit]
Barium can also forms a series of polyselenide compounds, such as Ba2Se3, BaSe2 and BaSe3.[1]
References[edit]
- ^ 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.
- ^ "C&L Inventory". echa.europa.eu.
- ^ 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.
- ^ 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) - ^ 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)