Samarium(III) fluoride
-fluorid.png) | |
| Names | |
|---|---|
| IUPAC name
Samarium(III) fluoride | |
| Other names
Samarium trifluoride, Trifluorosamarium | |
| Identifiers | |
13765-24-7  | |
| 3D model (Jmol) | Interactive image |
| ChemSpider | 75536  |
| ECHA InfoCard | 100.033.956 |
| EC Number | 237-367-3 |
| PubChem | 83714 |
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| Properties | |
| SmF3 | |
| Molar mass | 207.36 g/mol |
| Appearance | Yellow odorless powder |
| Density | 6.6 g/cm3 at 20 °C |
| Melting point | 1,306 °C (2,383 °F; 1,579 K) |
| Boiling point | 2,427 °C (4,401 °F; 2,700 K) |
| Insoluble | |
| Structure | |
| Orthorombic, oP16, SpaceGroup = Pnma, No. 62 | |
| Related compounds | |
| Related compounds |
Samarium(II) fluoride Samarium(III) chloride Samarium(III) bromide Samarium(III) iodide |
| Hazards | |
| R-phrases | R20/21/22, R36/37/38 |
| S-phrases | S9, S26, S36/37 |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| verify (what is ?) | |
| Infobox references | |
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 = 666,9 pm, b = 705,9 pm, c = 440,5 pm. Above 495 °C, it has the rhombohedral LaF3 structure (space group P3cl) – with lattice constants a = 707, c = 724 pm.[1]
Conditions/substances to avoid are: open flame, moisture, strong acids.
References
- ↑ K Rotereau et al.: The high-temperature phase transition in samarium fluoride, SmF3: structural and vibrational investigation, J. Phys.: Condens. Matter, 1998, 10, 1431–1446, doi:10.1088/0953-8984/10/6/026.
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