Samarium(III) arsenide

Samarium(III) arsenide
Names
Other names
samarium(III) arsenide, arsanylidynesamarium
Identifiers
3D model (JSmol)
ECHA InfoCard 100.032.266 Edit this at Wikidata
EC Number
  • 235-506-2
  • InChI=1S/As.Sm
    Key: GSRNJUWQQSVPNG-UHFFFAOYSA-N
  • [As]#[Sm]
Properties
SmAs
Molar mass 225.28
Appearance Crystals
Density 7.2 g/cm3
Melting point 2,257 °C (4,095 °F; 2,530 K)
Related compounds
Related compounds
 Neptunium arsenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Samarium(III) arsenide is a binary inorganic compound of samarium and arsenic with the chemical formula SmAs.[1][2]

Synthesis

Samarium arsenide can be synthesised by heating of pure substances in vacuum:

Sm + As → SmAs

Physical properties

Samarium arsenide forms crystals of a cubic system,[3] space group Fm3m, cell parameters a = 0.5921 nm, Z = 4, of NaCl-structure.[4][5]

The compound melts congruently at 2257 °C.

Uses

SmAs is used as a semiconductor and in photo optic applications.[6]

References

  1. ^ Toxic Substances Control Act (TSCA) Chemical Substance Inventory. Cumulative Supplement to the Initial Inventory: User Guide and Indices. United States Environmental Protection Agency. 1980. p. 301. Retrieved 11 January 2022.
  2. ^ "mp-1738: SmAs (cubic, Fm-3m, 225)". materialsproject.org. Retrieved 11 January 2022.
  3. ^ NBS Monograph. National Bureau of Standards. 1959. p. 68. Retrieved 11 January 2022.
  4. ^ Predel, B. (1991). "As-Sm (Arsenic-Samarium) - SpringerMaterials". materials.springer.com. Retrieved 11 January 2022.
  5. ^ Iandelli, A. (November 1956). "Uber einige Verbindungen des Samariums vom NaCl-Typ". Zeitschrift für anorganische und allgemeine Chemie (in German). 288 (1–2): 81–86. doi:10.1002/zaac.19562880111. Retrieved 11 January 2022.
  6. ^ "Samarium Arsenide". American Elements. Retrieved 11 January 2022.