Scandium monosulfide

Scandium monosulfide

Identifiers
CAS Number	12294-10-9
Properties
Chemical formula	SSc
Molar mass	77.02 g·mol^−1
Appearance	gold-coloured solid[1]
Structure
Crystal structure	cubic
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

Scandium monosulfide is a chemical compound of scandium and sulfur with the chemical formula ScS. Although its formula might suggest that it is a compound of scandium(II), i.e. [Sc²⁺][S²⁻], ScS is probably more realistically described as a pseudo-ionic compound, containing [Sc³⁺][S²⁻], with the remaining electron occupying the conduction band of the solid.^[1]

Structure

Scandium monosulfide adopts the sodium chloride crystal structure type.^[1]

Synthesis

Scandium monosulfide can be prepared by heating a mixture of scandium metal and powdered sulfur in the absence of air to 1150 °C for 70 hours.^[1]

Sc + S → ScS

References

1. Dismukes, J. P.; White, J. G. (1964). "The Preparation, Properties, and Crystal Structures of Some Scandium Sulfides in the Range Sc₂S₃-ScS". Inorg. Chem. 3 (9): 1220–1228. doi:10.1021/ic50019a004.