Iron disilicide

Summary

Iron disilicide
Names
IUPAC name
Iron disilicide
Other names
Iron(VIII) silicide
Identifiers
  • 12022-99-0 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 4891873 checkY
ECHA InfoCard 100.031.507 Edit this at Wikidata
EC Number
  • 234-671-8
  • 6336880
  • DTXSID00892427 Edit this at Wikidata
  • InChI=1S/Fe.2Si
    Key: JRACIMOSEUMYIP-UHFFFAOYSA-N
  • [Si]=[Fe]=[Si]
Properties
FeSi2
Molar mass 112.016 g/mol
Appearance gray tetragonal crystals[1]
Density 4.74 g/cm3[1]
Melting point 1,220 °C (2,230 °F; 1,490 K)[1]
Band gap 0.87 eV (ind.)[2]
Electron mobility 1200 cm2/(V·s)
Structure
Orthorhombic[3]
Cmca (No. 64), oS48
a = 0.9863 nm, b = 0.7791 nm, c = 0.7833 nm
16
Hazards
GHS pictograms GHS07: Harmful
GHS Signal word Warning
H315, H319, H335
Flash point Non-flammable
Related compounds
Other cations
Cobalt disilicide
Manganese disilicide
Titanium disilicide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Iron disilicide (FeSi2) is an intermetallic compound, a silicide of iron that occurs in nature as the rare mineral linzhiite. At room temperature it forms orthorhombic crystals (β phase), which convert into a tetragonal α phase upon heating to 970 °C.[3]

See also

References

  1. ^ a b c Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 4.67. ISBN 9781498754293.
  2. ^ Rizzi, A.; Rösen, B. N. E.; Freundt, D.; Dieker, Ch.; Lüth, H.; Gerthsen, D. (1995). "Heteroepitaxy of β-FeSi2 on Si by gas-source MBE". Physical Review B. 51 (24): 17780–17794. Bibcode:1995PhRvB..5117780R. doi:10.1103/PhysRevB.51.17780. PMID 9978811.
  3. ^ a b Dusausoy, Y.; Protas, J.; Wandji, R.; Roques, B. (1971). "Structure cristalline du disiliciure de fer, FeSi2-β". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 27 (6): 1209–1218. doi:10.1107/S0567740871003765.