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Dysprosium(III) sulfide

Chemical compound From Wikipedia, the free encyclopedia

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Dysprosium(III) sulfide is a binary inorganic compound of dysprosium and sulfur with the chemical formula Dy2S3.[1][2][3][4]

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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

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