Gallium(III) selenide
| Names | |
|---|---|
| Other names gallium triselenide | |
| Identifiers | |
| ChemSpider | |
| ECHA InfoCard | 100.031.527 |
| EC Number |
|
PubChem CID | |
CompTox Dashboard (EPA) | |
| Properties | |
| 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) |
| decomposition | |
| Hazards | |
| GHS labelling: | |
   | |
| Danger | |
| H301, H330, H373, H410 | |
| P260, P264, P270, P271, P273, P284, P301+P310, P304+P340, P310, P314, P320, P321, P330, P391, P403+P233, P405, P501 | |
| NFPA 704 (fire diamond) | |
| 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). | |
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. It is advised therefore that it not come into contact with bases.[citation needed]
References
[edit]- ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
- ^ 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
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