Samarium(III) fluoride
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| Samarium(III) fluoride | |
|---|---|
| Image:Samarium(III) fluoride.jpg | |
| IUPAC name | Samarium(III) fluoride |
| Other names | Samarium trifluoride, Trifluorosamarium |
| Identifiers | |
| CAS number | [13765-24-7] |
| PubChem | |
| EINECS number | |
| SMILES | F[Sm](F)F |
| Properties | |
| Molecular formula | SmF3 |
| Molar mass | 207.36 g/mol |
| Appearance | Yellow odorless powder |
| Density | 6.6 g/cm3 at 20 °C |
| Melting point |
1306 °C |
| Boiling point |
2427 °C |
| Solubility in water | Soluble |
| Hazards | |
| R-phrases | R20/21/22, R36/37/38 |
| S-phrases | S9, S26, S36/37 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Samarium(III) fluoride (SmF3) is a slightly hygroscopic solid fluoride.
At room temperature, it has orthorhombic structure with space group Pnma - β-YF3 type with lattice constants a = 6.669, b = 7.059, c = 4.405 (.10-1 nm). Above temperature 495 °C, it has rhombohedral structure with space group P3cl - LaF3 type with lattice constants a = 7.07, c = 7.24 (.10-1 nm).
Conditions/substances to avoid are: open flame, moisture, strong acids.
[edit] External links
- The high-temperature phase transition in samarium fluoride: structural and vibrational investigation
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