Dysprosium(III) iodide

Dysprosium(III) iodide is a binary inorganic compound of dysprosium and iodine with the chemical formula DyI
3.[1]

Dysprosium(III) iodide
Names
Other names
Dysprosium triiodide, triiododysprosium
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.035.888
EC Number
  • 239-493-4
  • InChI=1S/Dy.3HI/h;3*1H/q+3;;;/p-3
    Key: RZQFCZYXPRKMTP-UHFFFAOYSA-K
  • I[Dy](I)I
Properties
DyI3
Molar mass 543.213 g·mol−1
Appearance yellow-green flaky solid
Density g/cm3
Melting point 955 °C (1,751 °F; 1,228 K)
Boiling point 1,320 °C (2,410 °F; 1,590 K)
soluble
Structure
trigonal
Related compounds
Related compounds
 Ytterbium(III) iodide
Hazards
GHS labelling:
GHS08: Health hazard
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Synthesis

Dysprosium(III) iodide can be obtained by reacting dysprosium with iodine.

2Dy + 3I → 2DyI3

Dysprosium(III) iodide can be obtained using the effect of mercury diiodide on dysprosium filings:

2Dy + 3HgI2 → 2DyI3 + 3Hg

Physical properties

Dysprosium(III) iodide is a hygroscopic yellow-green flaky solid[2] that is soluble in water.[3][4] The compound has a trigonal crystal structure of the bismuth(III) iodide type with the space group R3.

Uses

Dysprosium(III) iodide is used in gas discharge lamps to generate white light.[5]

References
  1. "dysprosium triiodide". NIST. Retrieved 5 April 2023.
  2. Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3117. ISBN 978-0-412-30120-9. Retrieved 5 April 2023.
  3. "Dysprosium(III) iodide, ultra dry, 99.99% (REO), Thermo Scientific Chemicals". fishersci.com. Retrieved 5 April 2023.
  4. "35693 Dysprosium(III) iodide, ultra dry, 99.99% (REO)". Alfa Aesar. Retrieved 5 April 2023.
  5. Emsley, John (2003). Nature's Building Blocks: An A-Z Guide to the Elements. Oxford University Press. p. 131. ISBN 978-0-19-850340-8. Retrieved 5 April 2023.
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