Gallium(III) selenide

Gallium(III) selenide
Other names

gallium triselenide
Identifiers
CAS number 12024-24-7
PubChem 165985
Properties
Molecular formula Ga2Se3
Molar mass 376.33 g/mol
Appearance reddish-black crystals
Odor slight garlic odor
Density 4.92 g/cm3
Melting point

1020°C
Solubility in water decomposition
Hazards
EU classification not listed
NFPA 704
0
3
1
Related compounds
Other anions Gallium(III) oxide, Gallium(III) sulfide, Gallium tribromide, Gallium(III) telluride
Other cations Aluminium(III) selenide, Indium(III) selenide
Related compounds Gallium monoselenide
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Gallium(III) selenide (Ga2Se3) is a chemical compound. It has a defect sphalerite (cubic form of ZnS) structure.[1] It is a p-type semiconductor [2]

It can be formed by union of the elements. It hydrolyses slowly in water and quickly in mineral acids to form toxic hydrogen selenide gas. The reducing capabilities of the selenide ion make it vulnerable to oxidizing agents. Keep it away from bases.

References

  1. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Oxford: Butterworth-Heinemann. ISBN 0080379419. 
  2. ^ Temperature dependence of electrical conductivity and Hall effect of Ga2Se3 single crystal, A. E. Belal, Dr. H. A. El-shaikh, I. A. Ashraf Crystal Research and Technology,30, 1 , 135 - 139