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Promethium(III) sulfide

From Wikipedia, the free encyclopedia
Promethium(III) sulfide
Names
Other names
Dipromethium trisulfide
Identifiers
3D model (JSmol)
  • InChI=1S/2Pm.3S/q2*+3;3*-2
    Key: DWKHKOHUCVHMOJ-UHFFFAOYSA-N
  • [Pm+3].[Pm+3].[S-2].[S-2].[S-2]
Properties
Pm2S3
Molar mass386 g·mol−1
Appearancegarnet red crystals
Densityg/cm3
Structure
orthorhombic
Related compounds
Related compounds
Lanthanum(III) sulfide
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa).
Chemical compound

Promethium(III) sulfide is a binary inorganic compound with the chemical formulaPm2S3.

Synthesis

[edit]

Promethium(III) sulfide can be produced by treating metallic promethium with sulfur:

2Pm + 3S → Pm2S3

Once prepared, promethium(III) sulfide can be purified bychemical vapor transport usingiodine.[1]

Promethium(III) sulfide can also be prepared by treating the sulfate withhydrogen sulfide at elevated temperatures:[2]

Pm2(SO4)3 + 12 H2S → Pm2S3 + 12 H2O + 12 S

Physical properties

[edit]

The compound forms garnet red crystals of theorthorhombic system, space groupI43d[3] and exists inα andβ forms.[4]

References

[edit]
  1. ^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
  2. ^K. Wetzel (1963). "Lanthanum Sulfides". In G. Brauer (ed.).Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2. NY, NY: Academic Press. p. 1153.
  3. ^Vassiliev, Valery P.; Lysenko, Valery A.; Gaune-Escard, Marcelle (1 June 2019)."Relationship of thermodynamic data with Periodic Law".Pure and Applied Chemistry.91 (6):879–893.doi:10.1515/pac-2018-0717.ISSN 1365-3075.
  4. ^Macintyre, Jane E. (23 July 1992).Dictionary of Inorganic Compounds.CRC Press. p. 3779.ISBN 978-0-412-30120-9. Retrieved27 July 2024.
Sulfides(S2−)
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