Diiron silicide (Fe2Si) is an intermetallic compound, a silicide of iron. It occurs in cosmic dust as the mineral hapkeite. It is a non-stoichiometric compound where the Fe:Si ratio depends on the sample preparation. A related compound Fe5Si3 occurs in nature as the mineral xifengite.

Diiron silicide
Names
IUPAC name
Diiron silicide
Identifiers
3D model (JSmol)
  • InChI=1S/2Fe.Si
    Key: JQEFXLZKSTUUEC-UHFFFAOYSA-N
  • [Si].[Fe].[Fe]
Properties
Fe2Si
Molar mass 139.78 g/mol
Structure
Trigonal (Ni2Al-type)[1]
P3m1 (No. 161), hP6
a = 0.281 nm, b = 0.281 nm, c = 0.281 nm
1
Hazards
Flash point Non-flammable
Related compounds
Other cations
Dicobalt silicide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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See also

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References

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  1. ^ Khalaff, K.; Schubert, K. (1974). "Kristallstruktur von Fe2Si(h)". Journal of the Less Common Metals. 35 (2): 341–345. doi:10.1016/0022-5088(74)90247-1.