Samarium(III) arsenide
Chemical compound
From Wikipedia, the free encyclopedia
Samarium(III) arsenide is a binary inorganic compound of samarium and arsenic with the chemical formula SmAs.[1][2]
| Names | |
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| Other names
samarium(III) arsenide, arsanylidynesamarium | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.032.266 |
| EC Number |
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PubChem CID |
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| Properties | |
| SmAs | |
| Molar mass | 225.28 |
| Appearance | Crystals |
| Density | 7.2 g/cm3 |
| Melting point | 2,257 °C (4,095 °F; 2,530 K) |
| Related compounds | |
Related compounds |
Neptunium arsenide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis
Samarium arsenide can be synthesised by heating of pure substances in vacuum:
- Sm + As → SmAs
Physical properties
Samarium arsenide forms crystals of a cubic system,[3] space group Fm3m, cell parameters a = 0.5921 nm, Z = 4, of NaCl-structure.[4][5]
The compound melts congruently at 2257 °C.
Uses
SmAs is used as a semiconductor and in photo optic applications.[6]