Holmium(III) sulfide is the
sulfide
Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. Solutions of sulfide salts are corrosive. ''Sulfide'' also refers to chemical compounds lar ...
of
holmium, with the chemical formula of . Like other rare earth sulfides, it is used as a high-performance inorganic
pigment.
Preparation
Holmium(III) sulfide can be obtained by the reaction of
holmium(III) oxide and
hydrogen sulfide
Hydrogen sulfide is a chemical compound with the formula . It is a colorless chalcogen-hydride gas, and is poisonous, corrosive, and flammable, with trace amounts in ambient atmosphere having a characteristic foul odor of rotten eggs. The unde ...
at 1325 °C.
:
Properties
Holmium(III) sulfide has orange-yellow
crystals in the
monoclinic crystal system,
with the
space group ''P''2
1/''m'' (No. 11).
Under high pressure, holmium(III) sulfide can form in the
cubic
Cubic may refer to:
Science and mathematics
* Cube (algebra), "cubic" measurement
* Cube, a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex
** Cubic crystal system, a crystal system w ...
and
orthorhombic
In crystallography, the orthorhombic crystal system is one of the 7 crystal systems. Orthorhombic lattices result from stretching a cubic lattice along two of its orthogonal pairs by two different factors, resulting in a rectangular prism with a r ...
crystal systems.
References
{{inorganic-compound-stub
Holmium compounds
Sesquisulfides