Samarium(III) fluoride

Samarium(III) fluoride
Identifiers
CAS number 13765-24-7
PubChem 83714
ChemSpider 75536 Y
EC number 237-367-3
Jmol-3D images Image 1
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
Structure
Crystal structure Orthorombic, oP16, SpaceGroup = Pnma, No. 62
Related compounds
Related compounds Samarium(II) fluoride
Hazards
R-phrases R20/21/22, R36/37/38
S-phrases S9, S26, S36/37
 Y (verify) (what is: Y/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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 = 6.669, b = 7.059, c = 4.405 (.10-1 nm). Above 495 °C, it has the rhombohedral LaF3 structure (space group P3cl) - with lattice constants a = 7.07, c = 7.24 (.10-1 nm).[1]

Conditions/substances to avoid are: open flame, moisture, strong acids.

References

  1. ^ The high-temperature phase transition in samarium fluoride,SmF3: structural and vibrational investigation,K Rotereau et al. 1998 J. Phys.: Condens. Matter 10 1431-1446, doi:10.1088/0953-8984/10/6/026