Aluminium selenide is the inorganic compound with the formula Al2Se3.
Preparation
It is a solid prepared by igniting a mixture of the elements at 1,000 °C (1,830 °F):
- 2 Al + 3 Se → Al2Se3
The pure compound is white, but typical samples are coloured.[3] Samples are usually protected from moisture, because they hydrolyze readily, giving off highly toxic hydrogen selenide gas:[4]
- 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.[3]
References
- ^ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 4–40. ISBN 0-8493-0594-2.
- ^ Steigmann, G. A.; Goodyear, J. (1966). "The crystal structure of Al2Se3". Acta Crystallographica. 20 (5): 617. Bibcode:1966AcCry..20..617S. doi:10.1107/S0365110X66001506.
- ^ a b Waitkins, G. R.; Shutt, R. (1946). "Aluminum Selenide and Hydrogen Selenide". Inorganic Syntheses. Vol. 2. pp. 183–186. doi:10.1002/9780470132333.ch55. ISBN 9780470132333.
- ^ Langner, Bernd E. (2005) "Selenium and Selenium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim. doi:10.1002/14356007.a23_525