Aluminium selenide

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.

Aluminium selenide[1]
Names
Other names
Aluminium(III) selenide
Identifiers
  • 1302-82-5
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.013.737
EC Number
  • 215-110-6
PubChem CID
CompTox Dashboard (EPA)
SMILES
  • [Al+3].[Al+3].[Se-2].[Se-2].[Se-2]
Properties
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)
decomposes
Structure
Monoclinic, mS20, Space group Cc, No. 9[2]
Thermochemistry
Std enthalpy of
formation ΔfHo298		 -566.9 kJ/mol
Standard molar
entropy So298		 154.8 J/mol K
Hazards
EU classification not listed
NFPA 704

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

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.

References
  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.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.