Aluminium selenide

Aluminium selenide^[1]
Names
	Other names Aluminium(III) selenide
Identifiers
CAS Number	1302-82-5;
3D model (JSmol)	Interactive image;
ChemSpider	144477;
ECHA InfoCard	100.013.737
EC Number	215-110-6;
PubChem CID	164804;
CompTox Dashboard (EPA)	DTXSID80894848 ;
	SMILES [Al+3].[Al+3].[Se-2].[Se-2].[Se-2];
Properties
Chemical formula	Al2Se3
Molar mass	290.84 g/mol
Appearance	yellow to brown powder
Odor	odorless
Density	3.437 g/cm3
Melting point	947 °C (1,737 °F; 1,220 K)
Solubility in water	decomposes
Structure
Crystal structure	Monoclinic, mS20, Space group Cc, No. 9
Thermochemistry
Std enthalpy of; formation ΔfHo298	-566.9 kJ/mol
Standard molar; entropy So298	154.8 J/mol K
Hazards
EU classification	not listed
	0 3 3
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Aluminium selenide, also known as aluminum selenide or aluminium(III) selenide, is a chemical compound. Its chemical formula is Al₂Se₃. It contains aluminium in its +3 oxidation state. It contains aluminium and selenide ions.

Properties

It reacts with water to make hydrogen selenide. It is a reducing agent and can burn to make aluminium oxide and selenium dioxide.

Preparation

It is made by reacting selenium with aluminium powder at a high temperature.

Uses

It is used to make hydrogen selenide.

Related pages

Sodium selenide

References

↑ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, FL: 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): 617–619. doi:10.1107/S0365110X66001506.

[hand-1] Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, FL: CRC Press. pp. 4–40. ISBN 0-8493-0594-2.

[2] Steigmann, G. A.; Goodyear, J. (1966). "The crystal structure of Al2Se3". Acta Crystallographica. 20 (5): 617–619. doi:10.1107/S0365110X66001506.

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