Holmium(III) chloride
Holmium(III) chloride is the inorganic compound with the formula HoCl3. It is a common salt but is mainly used in research. It exhibits the same color-changing behavior seen in holmium oxide, being a yellow in natural lighting and a bright pink color in fluorescent lighting.
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| Names | |
|---|---|
| Other names
Holmium trichloride Holmiumchlorid | |
| Identifiers | |
CAS Number |
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| ECHA InfoCard | 100.030.339 |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
Chemical formula |
HoCl3 |
| Molar mass | 271.289 g/mol |
| Appearance | yellow crystals hygroscopic |
| Density | 3.7 g/cm3 |
| Melting point | 720 °C (1,328 °F; 993 K)[1] |
| Boiling point | 1,500 °C (2,730 °F; 1,770 K) (decomposes) |
Solubility in water |
dissolves |
| Structure | |
Crystal structure |
Monoclinic, mS16 |
Space group |
C12/m1, No. 12 |
| Related compounds | |
Other anions |
Holmium(III) oxide |
Other cations |
Dysprosium(III) chloride, Erbium(III) chloride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
Preparation
It forms upon union of the elements, but a more commonly used method involves heating a mixture of holmium(III) oxide and ammonium chloride at 200-250 °C:[2]
- Ho2O3 + 6 NH4Cl → 2 HoCl3 + 6 NH3 + 2 H2O
References
- Lide, David R., ed. (2006). CRC Handbook of Chemistry and Physics (87th ed.). Boca Raton, FL: CRC Press. ISBN 0-8493-0487-3.
- Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY.
- Wells A.F. (1984) Structural Inorganic Chemistry 5th edition Oxford. ISBN 0-19-855370-6
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