Scandium monosulfide is a
chemical compound
A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element ...
of
scandium
Scandium is a chemical element with the symbol Sc and atomic number 21. It is a silvery-white metallic d-block element. Historically, it has been classified as a rare-earth element, together with yttrium and the Lanthanides. It was discovered in ...
and
sulfur with the
chemical formula
In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbol ...
ScS. Although its formula might suggest that it is a compound of scandium(II), i.e.
c2+S
2−], ScS is probably more realistically described as a pseudo-ionic compound, containing
c3+S
2−], with the remaining electron occupying the
conduction band of the solid.
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
References
Sulfides
Scandium compounds
Rock salt crystal structure
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