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Chemical compound
Holmium(III) sulfide is the sulfide 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 at 1325 °C.
Properties.
Holmium(III) sulfide has orange-yellow crystals in the monoclinic crystal system, with the space group "P"21/"m" (No. 11). Under high pressure, holmium(III) sulfide can form in the cubic and orthorhombic crystal systems.