Holmium(III) chloride
 | |
| Names | |
|---|---|
| Other names
Holmium trichloride Holmiumchlorid | |
| Identifiers | |
10138-62-2  14914-84-2 (hexahydrate)  | |
| ECHA InfoCard | 100.030.339 |
| PubChem | 24992 |
| UNII | CAR334HOLD |
| Properties | |
| 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) |
| dissolves | |
| Structure | |
| Monoclinic, mS16 | |
| 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). | |
| verify (what is ?) | |
| Infobox references | |
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.
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
Structure
In the solid state it has the YCl3 layer structure. [3]
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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