Chemistry:Barium selenide
From HandWiki
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3D model (JSmol)
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| BaSe | |
| Molar mass | 216.298 g·mol−1 |
| Appearance | white solid |
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a = 662.9 pm
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4 |
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| GHS Signal word | 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). | |
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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
Related compounds
Barium can also forms a series of polyselenide compounds, such as Ba2Se3, BaSe2 and BaSe3.[1]
References
- ↑ 1.0 1.1 Okamoto, H (August 1991). "The Ba-Se (Barium-Selenium) system" (in en). Journal of Phase Equilibria 12 (4): 467–469. doi:10.1007/BF02645971. ISSN 1054-9714. http://link.springer.com/10.1007/BF02645971.
- ↑ "C&L Inventory". https://echa.europa.eu/information-on-chemicals/cl-inventory-database/-/discli/details/153441.
- ↑ 3.0 3.1 P. Ehrlich (1963). "Alkaline Earth Metals". in G. Brauer. Handbook of Preparative Inorganic Chemistry, 2nd Ed.. 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" (in en). Journal of Applied Spectroscopy 84 (1): 59–65. doi:10.1007/s10812-017-0427-1. ISSN 0021-9037. Bibcode: 2017JApSp..84...59S. http://link.springer.com/10.1007/s10812-017-0427-1. Retrieved 2018-08-09.
- ↑ 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. https://www.worldcat.org/oclc/310719490.
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