Английская Википедия:Barium selenide

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Шаблон:Chembox

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