Antimony triselenide
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| Antimony triselenide | |
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Other names
antimonselite |
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| Identifiers | |
| CAS number | 1315-05-5 |
| PubChem | 6391662 |
| ChemSpider | 11483776  |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | Sb2Se3 |
| Molar mass | 480.4 g/mol |
| Appearance | black crystals |
| Density | 5.81 g/cm3, solid |
| Melting point |
611 °C |
| Structure | |
| Crystal structure | Orthorhombic, oP20, SpaceGroup = Pnma, No. 62 |
| Related compounds | |
| Other anions | antimony(III) oxide, antimony(III) sulfide, antimony(III) telluride |
| Other cations | arsenic(III) selenide, bismuth(III) selenide |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Antimony triselenide is the chemical compound with the formula Sb2Se3. The material exists as the sulfosalt mineral antimonselite, which crystallizes in an orthorhombic space group.[1] In this compound, antimony is assigned the oxidation state 3+ and selenium 2-, but in fact the bonding in this compound is highly covalent as reflected by the black color and semiconducting properties of this and related materials.[2]
It may be formed by the reaction of antimony with selenium.
[edit] References
- ^ Jambor, J. L.; Grew, E. S."New Mineral Names" American Mineralogist, Volume 79, pages 387-391, 1994.
- ^ Caracas, R.; Gonze, X. "First-principles study of the electronic properties of A2B3 minerals,, with A=Bi,Sb and B=S,Se, Note: Hypothetical sulphosalt structure derived from density functional theory"" Physics and Chemistry of Minerals 2005, volume 32 p.295-300.
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