Gadolinium disilicide

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Gadolinium disilicide
Names
Other names
Gadolinium silicide
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 235-216-6
  • InChI=1S/Gd.2Si/q+3;;
    Key: MDYZLTUIAFSQMZ-UHFFFAOYSA-N
  • [Si].[Si].[Gd+3]
Properties
GdSi2
Molar mass 213.42 g·mol−1
Appearance crystals
Density 5.9 g/cm3
Melting point 1,540 °C (2,800 °F; 1,810 K)
insoluble
Structure
Hexagonal, orthorhombic
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Gadolinium disilicide is a binary inorganic compound of gadolinium and silicon with the chemical formula GdSi2.[1][2][3]

GdSi2 can be produced by heating gadolinium and silicon in the presence of mercury. The mercury is removed by distillation after the reaction.[4] The compound can also be produced by the reaction of magnesium silicide and gadolinium chloride.[5][6]

Physical properties

The compound features a metallic luster and exceptional thermal stability with a high melting point, ideal for high-temperature environments. Its semiconducting behavior varies with temperature and doping, while its hexagonal crystal structure (space group P6/mmm)[7] underpins distinctive electronic and magnetic properties.[8]

Gadolinium disilicide also exists in orthorhombic form, space group Imam.[9][10]

Chemical properties

Uses

References

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