Dysprosium(III) sulfide

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Dysprosium(III) sulfide
Names
Other names Didysprosium trisulfide
Identifiers
CAS Number	12133-10-7
3D model (JSmol)	Interactive image
ChemSpider	21248508
ECHA InfoCard	100.031.995
EC Number	235-208-2
PubChem CID	24837760
CompTox Dashboard (EPA)	DTXSID201014282
InChI InChI=1S/3Dy.3S/q;2+3;3-2 Key: SVCBLQQYIMDMCB-UHFFFAOYSA-N
SMILES [Dy+3].[Dy+3].[S-2].[S-2].[S-2]
Properties
Chemical formula	Dy₂S₃
Molar mass	421.18 g·mol⁻¹
Appearance	brown crystals
Density	6.08 g/cm³
Solubility in water	moderately soluble
Related compounds
Related compounds	Lanthanum(III) sulfide
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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

Dy₂O₃ + 3H₂S → Dy₂S₃ + 3H₂O

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]

Dy₂S₃ oxidizes when strongly heated in air:

Dy₂S₃ + 3O₂ → Dy₂O₂S + 2SO₂

v t e Dysprosium compounds
Dy(II)	DyCl₂ DyI₂ DyS
Dy(III)	Dy₂Sn₂O₇ Dy₂Ti₂O₇ Dy(CH₃COO)₃ Dy(C₅H₇O₂)₃ DySb DyAs DyBi DyBr₃ DyCl₃ DyF₃ Dy(IO₃)₃ DyI₃ Dy(OH)₃ Dy(NO₃)₃ DyN DyPO₄ Dy₂O₃ DyP Dy₂Se₃ Dy₂S₃ Dy₂Te₃

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