Holmium(III) chloride

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Holmium(III) chloride
Aluminium-trichloride-crystal-3D-balls.png
Names
Other names
Holmium trichloride
Holmiumchlorid
Identifiers
10138-62-2 YesY
14914-84-2 (hexahydrate) N
PubChem 24992
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
Vapor pressure {{{value}}}
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).
N verify (what is YesYN ?)
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

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  2. Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY.
  3. Wells A.F. (1984) Structural Inorganic Chemistry 5th edition Oxford. ISBN 0-19-855370-6

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