Holmium(III) sulfide

Holmium(III) sulfide ^[1]

Identifiers
CAS Number	12162-59-3  Y
3D model (JSmol)	Interactive image
ChemSpider	145818
ECHA InfoCard	100.032.081
EC Number	235-302-3
PubChem CID	166640
CompTox Dashboard (EPA)	DTXSID10923892
InChI InChI=1S/2Ho.3S/q2*+3;3*-2 Key: NJMYJOBJCDACOG-UHFFFAOYSA-N
SMILES [Ho+3].[Ho+3].[S-2].[S-2].[S-2]
Properties
Chemical formula	Ho2S3
Molar mass	426.04 g·mol−1
Appearance	orange-yellow solid
Density	5.92 g/cm−3
Related compounds
Other anions	holmium(III) oxide; holmium(III) selenide
Other cations	dysprosium(III) sulfide erbium(III) sulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Holmium(III) sulfide is the sulfide salt of holmium, with the chemical formula of Ho₂S₃.

Preparation

Holmium(III) sulfide can be obtained by the reaction of holmium(III) oxide and hydrogen sulfide at 1325 °C. ^[2]

Ho₂O₃ + 3 H₂S → Ho₂S₃ + 3 H₂O

It can also be prepared by treating the sulfate with hydrogen sulfide at elevated temperatures. ^[3]

In another preparation, it can be produced by treating metallic holmium with sulfur:

2Ho + 3S → Ho₂S₃

Once prepared, holmium(III) sulfide can be purified by chemical vapor transport using iodine. ^[4]

Properties

Holmium(III) sulfide has orange-yellow crystals in the monoclinic crystal system, ^[1] with the space group P2₁/m (No. 11). ^[5] Under high pressure, holmium(III) sulfide can form in the cubic and orthorhombic crystal systems. ^[6]

References

1. Lide, David R. (2004). CRC Handbook of Chemistry and Physics, 84th Edition. CRC Press. pp. 4–60. ISBN   0849304849.
2. G. Meyer; Lester R. Morss, eds. (1991). Synthesis of Lanthanide and Actinide Compounds. Kluwer Academic Publishers. pp. 329–335. ISBN   0792310187.
3. K. Wetzel (1963). "Lanthanum Sulfides". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 2. NY, NY: Academic Press. p. 1153.
4. 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
5. "Ho2S3: crystal structure, physical properties". Non-Tetrahedrally Bonded Binary Compounds II. Landolt-Börnstein - Group III Condensed Matter. Vol. 41D. 2000. pp. 1–3. doi:10.1007/10681735_623. ISBN   3-540-64966-2. Archived from the original on 2018-09-01. Retrieved 2021-06-22.
6. Tonkov, E. Yu (1998). Compounds and Alloys Under High Pressure A Handbook. CRC Press. p. 272. ISBN   978-90-5699-047-3.