Chemical compound
Dysprosium(III) sulfide is a binary inorganic compound of dysprosium and sulfur with the chemical formula Dy2S3.[1][2][3][4]
Synthesis
Heating of pure substances in an inert atmosphere or vacuum:
- 2Dy + 3S → Dy2S3
The effect of hydrogen sulfide on dysprosium(III) oxide:
- Dy2O3 + 3H2S → Dy2S3 + 3H2O
Physical properties
Didysprosium trisulfide forms yellow-orange-brown crystals of two modifications: cubic and monoclinic systems.[5]
There is evidence that Dy2S3 forms crystals of brown-red, black, or green color.
The crystals are stable in dry air, but in humid air they are slowly hydrolyzed. The compound is moderately soluble in water and acids.[6]
Chemical properties
Dy2S3 oxidizes when strongly heated in air:
- Dy2S3 + 3O2 → Dy2O2S + 2SO2
References