Ytterbium(II) sulfide
Chemical compound
From Wikipedia, the free encyclopedia
Ytterbium(II) sulfide is a binary inorganic compound of ytterbium and sulfur with the chemical formula YbS.[1][2]
| Names | |
|---|---|
| Other names
Ytterbium monosulfide, ytterbium(II) sulfide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
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| Properties | |
| SYb | |
| Molar mass | 205.11 g·mol−1 |
| Appearance | black crystals |
| Density | 6.68 g/cm3 |
| Melting point | 2,038 °C (3,700 °F; 2,311 K) |
| Structure | |
| cubic | |
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
Synthesis of ytterbium(II) sulfide can be via a reaction of pure substances in an inert atmosphere:[3]
- Yb + S → YbS
An alternative synthesis is by comproportionation of ytterbium(III) sulfide and ytterbium metal in vacuum at 1000–1100 °C:
- Yb2S3 + Yb → 3YbS
Physical properties
Ytterbium(II) sulfide forms black crystals of cubic symmetry, space group Fm3m, cell parameter a = 0.5658 nm, Z = 4.[4]
Ytterbium(II) sulfide demonstrates semiconductor behavior.[5]
