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二硅化铁

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二硅化铁
IUPAC名
Iron disilicide
二硅化铁
识别
CAS号 12022-99-0  checkY
PubChem 6336880
ChemSpider 4891873
SMILES
 
  • [Si]=[Fe]=[Si]
InChI
 
  • 1S/Fe.2Si
InChIKey JRACIMOSEUMYIP-UHFFFAOYSA-N
EINECS 234-671-8
性质
化学式 FeSi2
摩尔质量 112.016 g/mol g·mol⁻¹
外观 灰色四方晶体[1]
密度 4.74 g/cm3[1]
熔点 1220 °C(1493 K)
能隙 0.87 eV (ind.)[2] eV
电子迁移率 1200 cm2/(V·s)
结构
晶体结构 斜方晶系[3]
空间群 Cmca (No. 64), oS48
晶格常数 a = 0.9863 nm, b = 0.7791 nm, c = 0.7833 nm
危险性
GHS危险性符号
《全球化学品统一分类和标签制度》(简称“GHS”)中有害物质的标签图案
GHS提示词 警告
H-术语 H315, H319, H335
P-术语 ?
闪点 非易燃
相关物质
其他阳离子 二硅化钴
二硅化锰
二硅化钛
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

二硅化铁(FeSi2)是一种金属间化合物,是一种硅化物,以稀有矿物林芝矿的形式存在于自然界中。在室温下,它形成斜方晶体(β相),加热至970°C时转变为四方α相。[3]

参见

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参考资料

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  1. ^ 1.0 1.1 Haynes, William M. (编). CRC Handbook of Chemistry and Physics 97th. CRC Press. 2016: 4.67. ISBN 9781498754293. 
  2. ^ Rizzi, A.; Rösen, B. N. E.; Freundt, D.; Dieker, Ch.; Lüth, H.; Gerthsen, D. Heteroepitaxy of β-FeSi2 on Si by gas-source MBE. Physical Review B. 1995, 51 (24): 17780–17794. Bibcode:1995PhRvB..5117780R. PMID 9978811. doi:10.1103/PhysRevB.51.17780. 
  3. ^ 3.0 3.1 Dusausoy, Y.; Protas, J.; Wandji, R.; Roques, B. Structure cristalline du disiliciure de fer, FeSi2-β. Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 1971, 27 (6): 1209–1218. doi:10.1107/S0567740871003765. 
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二硅化铁
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