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Aluminium selenide

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Aluminium selenide is the inorganic compound with the formula Al2Se3.

Preparation

It is a solid prepared by igniting a mixture of the elements at 1000 C: :2 Al + 3 Se → Al2Se3 The pure compound is white, but typical samples are coloured. Samples are usually protected from moisture, because they hydrolyze readily, giving off highly toxic hydrogen selenide gas: :Al2Se3 + 3 H2O → Al2O3 + 3 H2Se

Use

Al2Se3 has been used as a precursor to hydrogen selenide, which is released when the solid is treated with acids.

References

(1966). "The crystal structure of Al₂Se₃". Acta Crystallographica.
(1946). "Inorganic Syntheses".
Langner, Bernd E. (2005) "Selenium and Selenium Compounds" in ''Ullmann's Encyclopedia of Industrial Chemistry'', Wiley-VCH, Weinheim. {{doi. 10.1002/14356007.a23_525

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selenides aluminium-compounds

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