Английская Википедия:Barium selenide
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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.[1]
BaSe has the lowest energy band gap among alkaline earth chalcogenides.[2]
Preparation
Barium selenide can be obtained by the reduction of barium selenate in hydrogen flow:.[1][3]
- BaSeO4 + H2 → BaSe + 4 H2O
It can also be obtained by reacting selenium with barium carbonate or barium oxide at high temperature:Шаблон: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.[4]
References
Шаблон:Barium compounds Шаблон:Selenides
