Dysprosium(III) sulfide

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

Dysprosium(III) sulfide can be produced by treating metallic dysprosium with sulfur:

2Dy + 3S → Dy₂S₃

Once prepared, dysprosium(III) sulfide can be purified by chemical vapor transport using iodine. ^[5]

Dysprosium(III) sulfide can also be prepared by treating the sulfate with hydrogen sulfide at elevated temperatures: ^[6]

Dy₂(SO₄)₃ + 12 H₂S → Dy₂S₃ + 12 H₂O + 12 S

Physical properties

Didysprosium trisulfide forms yellow-orange-brown crystals of two modifications: cubic and monoclinic systems. ^[7]

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. ^[8]

Chemical properties

Dy₂S₃ oxidizes when strongly heated in air:

Dy₂S₃ + 3O₂ → Dy₂O₂S + 2SO₂

References

1. Bouroushian, Mirtat (23 April 2010). Electrochemistry of Metal Chalcogenides. Springer Science & Business Media. p. 32. ISBN   978-3-642-03967-6 . Retrieved 1 August 2024.
2. Toxic Substances Control Act (TSCA) Chemical Substance Inventory. Cumulative Supplement to the Initial Inventory: User Guide and Indices. U.S. Environmental Protection Agency, Office of Toxic Substances. 1980. p. 128. Retrieved 1 August 2024.
3. "Dysprosium Sulfide". American Elements . Retrieved 1 August 2024.
4. "WebElements Periodic Table » Dysprosium » didysprosium trisulphide". webelements.com. Retrieved 1 August 2024.
5. A. W. Sleight and D. P. Kelly (1973), Aaron Wold and John K. Ruff (ed.), Rare-earth Sesquisulfides, Ln₂S₃, Inorganic Syntheses, vol. 14, McGraw-Hill Book Company, Inc., pp. 152–155
6. K. Wetzel (1963). "Lanthanum Sulfides". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2. NY, NY: Academic Press. p. 1153.
7. Haynes, William M. (4 June 2014). CRC Handbook of Chemistry and Physics. CRC Press. p. 4-63. ISBN   978-1-4822-0868-9 . Retrieved 1 August 2024.
8. "Buy DYSPROSIUM SULFIDE | 12133-06-1 | BenchChem". benchchem.com. Retrieved 1 August 2024.