Germanium diselenide
Chemical compound
From Wikipedia, the free encyclopedia
Germanium diselenide is an inorganic compound, with the chemical formula of GeSe2.
| Names | |
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| Other names
Germanium selenide Germanium(IV) selenide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.031.863 |
| EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| GeSe2 | |
| Molar mass | 230.572 g·mol−1 |
| Appearance | yellow crystals |
| Density | 4.56±0.02 g·cm−3[1] |
| Melting point | 707±3 °C[1] |
| Related compounds | |
Other anions |
Germanium dioxide Germanium disulfide Germanium ditelluride |
Other cations |
Carbon diselenide Silicon diselenide Tin diselenide Lead diselenide |
Related compounds |
Germanium 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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Preparation
Germanium diselenide is prepared by reacting stoichiometric amounts of germanium and selenium or by reacting germanium tetrachloride with hydrogen selenide:[1]
- Ge + 2Se → GeSe2
- GeCl4 + 2H2Se → GeSe2 + 4HCl
Properties
Germanium diselenide reacts with selenium and hydrazine to obtain yellow (N2H5)4Ge2Se6, a selenidogermanate.[2]
- 2GeSe2 + 2Se + 5N2H4 → (N2H5)4Ge2Se6 + N2
It reacts with lead selenide and gallium(III) selenide at high temperatures to obtain PbGa2GeSe6.[3]