Iron disilicide
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.
Names | |
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IUPAC name
Iron disilicide | |
Other names
Iron(VIII) silicide | |
Identifiers | |
3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.031.507 |
EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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SMILES
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Properties | |
FeSi2 | |
Molar mass | 112.016 g/mol |
Appearance | gray tetragonal crystals |
Density | 4.74 g/cm3 |
Melting point | 1,220 °C (2,230 °F; 1,490 K) |
Band gap | 0.87 eV (ind.) |
Electron mobility | 1200 cm2/(V·s) |
Structure | |
Orthorhombic | |
Space group |
Cmca (No. 64), oS48 |
a = 0.9863 nm, b = 0.7791 nm, c = 0.7833 nm | |
Formula units (Z) |
16 |
Hazards | |
GHS labelling: | |
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 |
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