Gallium(III) selenide

Gallium(III) selenide

Names
Other names gallium triselenide
Identifiers
CAS Number	12024-24-7 Y
PubChem	165985
Properties
Chemical formula	Ga2Se3
Molar mass	376.33 g/mol
Appearance	reddish-black crystals
Odor	slight garlic odor
Density	4.92 g/cm3
Melting point	1,020 °C (1,870 °F; 1,290 K)
Solubility in water	decomposition
Vapor pressure	{{{value}}}
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
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

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

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. It is advised therefore that it not come into contact with bases.