Germanium diselenide

Germanium diselenide is an inorganic compound, with the chemical formula of GeSe2.

Germanium diselenide
Names
Other names
Germanium selenide
Germanium(IV) selenide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.863
EC Number
  • 235-063-5
  • InChI=1S/GeSe2/c2-1-3
    Key: WYDSCDJEAVCHQJ-UHFFFAOYSA-N
  • [Ge](=[Se])=[Se]
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).
Infobox references

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 obtained 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]

References
  1. Ivanov-Emin, B. N. Germanium selenides. Zhurnal Obshchei Khimii, 1940. 10: 1813-1818. ISSN: 0044-460X.
  2. David B. Mitzi (May 2005). "Synthesis, Structure, and Thermal Properties of Soluble Hydrazinium Germanium(IV) and Tin(IV) Selenide Salts". Inorganic Chemistry. 44 (10): 3755–3761. doi:10.1021/ic048276l. ISSN 0020-1669. PMID 15877460. Retrieved 2021-01-23.
  3. Valeriy V. Badikov, Dmitrii V. Badikov, Li Wang, Galina S. Shevyrdyaeva, Vladimir L. Panyutin, Anna A. Fintisova, Svetlana G. Sheina, Valentin Petrov (2019-08-07). "Crystal Growth and Characterization of a New Quaternary Chalcogenide Nonlinear Crystal for the Mid-Infrared: PbGa 2 GeSe 6". Crystal Growth & Design. 19 (8): 4224–4228. doi:10.1021/acs.cgd.9b00118. ISSN 1528-7483. S2CID 198354895. Archived from the original on 2021-07-26. Retrieved 2021-01-23.{{cite journal}}: CS1 maint: multiple names: authors list (link)
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