Samarium trifluoride, Trifluorosamarium
3D model (Jmol)
|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)|
|Orthorombic, oP16, SpaceGroup = Pnma, No. 62|
|R-phrases (outdated)||R20/21/22, R36/37/38|
|S-phrases (outdated)||S9, S26, S36/37|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
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.
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