Thorium monosilicide

Thorium monosilicide

Names
IUPAC name silicon;thorium
Other names Thorium(II) silicide
Identifiers
3D model (JSmol)	Interactive image
PubChem CID	159688632
InChI InChI=1S/Si.Th Key: MWCXNDQKSNSMJN-UHFFFAOYSA-N
SMILES [Th].[Si]
Properties
Chemical formula	SiTh
Molar mass	260.123 g·mol−1
Density	9.85 g/cm3 [1]
Melting point	1,900 [1]  °C (3,450 °F; 2,170 K)
Structure
Crystal structure	Orthorhombic
Space group	Pbnm
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Thorium monosilicide is a binary inorganic chemical compound of thorium and silicon with the chemical formula ThSi. ^[1] The compound is one of several known thorium silicides, and its properties and potential applications have been investigated.

Synthesis

ThSi was first observed in 1953 when samples of ThSi_1.0 were heated in vacuum to 1700 °C, resulting in the formation of ThSi and β-ThSi₂. ^[2]

Physical properties

Thorium monosilicide has a orthorhombic crystal structure with the space group Pbnm. The compound is isostructural with ZrSi and USi. ^{[3] [4]}

References

1. Wedemeyer, Horst (1993). "Compounds of Thorium with Silicon". Th Thorium Supplement Volume C 8: Compounds with Si, P, As, Sb, Bi, and Ge. Springer. pp. 1–58. doi:10.1007/978-3-662-06348-4_1. ISBN   978-3-662-06348-4 . Retrieved 19 June 2025.
2. Bickel, Michael; Wedemeyer, Horst (17 April 2013). Th Thorium Supplement Volume C 8: Compounds with Si, P, As, Sb, Bi, and Ge. Springer Science & Business Media. p. 9. ISBN   978-3-662-06348-4 . Retrieved 19 June 2025.
3. Donnay, Joseph Désiré Hubert (1963). Crystal Data; Determinative Tables. American Crystallographic Association. p. 433. Retrieved 19 June 2025.
4. Ahrland, S.; Bagnall, K. W.; Brown, D. (7 June 2016). The Chemistry of the Actinides: Comprehensive Inorganic Chemistry. Elsevier. p. 390. ISBN   978-1-4831-5934-8 . Retrieved 19 June 2025.