Holmium(III) chloride: Difference between revisions
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| ImageFile = Aluminium-trichloride-crystal-3D-balls.png |
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| Section1 = {{Chembox Identifiers |
| Section1 = {{Chembox Identifiers |
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| CASNo = 10138-62-2 |
| CASNo = 10138-62-2 |
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| CASOther = <br> 14914-84-2 (hexahydrate) |
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| MolarMass = 271.20 g/mol |
| MolarMass = 271.20 g/mol |
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| Solubility = dissolves |
| Solubility = dissolves |
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| MeltingPt = |
| MeltingPt = 720 °C<ref>{{RubberBible87th}}</ref> |
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| BoilingPt = 1500 °C (decomp) |
| BoilingPt = 1500 °C (decomp) |
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| ⚫ | '''Holmium(III) chloride''' is the [[inorganic compound]] with the [[chemical formula|formula]] [[Holmium|Ho]][[Chloride|Cl<sub>3</sub>]]. 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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==Preparation== |
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| ⚫ | '''Holmium(III) chloride''' |
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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:<ref name=Brauer>Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY.</ref> |
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==Structure== |
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It may be formed by the reaction between [[holmium(III) oxide]] and [[hydrochloric acid]]: |
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In the solid state it has the [[yttrium(III) chloride|YCl<sub>3</sub>]] layer structure. <ref> Wells A.F. (1984) ''Structural Inorganic Chemistry'' 5th edition Oxford. ISBN 0-19-855370-6 </ref> |
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==References== |
==References== |
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Revision as of 00:49, 6 March 2011
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| Names | |
|---|---|
| Other names
Holmium trichloride, Holmiumchlorid
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| Identifiers | |
| ECHA InfoCard | 100.030.339 |
CompTox Dashboard (EPA)
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| Properties | |
| HoCl3 | |
| Molar mass | 271.20 g/mol |
| Appearance | yellow crystals hygroscopic |
| Density | 3.7 g/cm3 |
| Melting point | 720 °C[1] |
| Boiling point | 1500 °C (decomp) |
| dissolves | |
| Structure | |
| Monoclinic, mS16 | |
| C12/m1, No. 12 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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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