Scandium monosulfide explained

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.

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.

Sc + S → ScS

Notes and References

1. The Preparation, Properties, and Crystal Structures of Some Scandium Sulfides in the Range Sc₂S₃-ScS . J. P. . Dismukes . White, J. G. . . 1964 . 3 . 9 . 1220 - 1228 . 10.1021/ic50019a004 .