Dysprosium(III) iodide
Chemical compound
From Wikipedia, the free encyclopedia
Dysprosium(III) iodide is a binary inorganic compound of dysprosium and iodine with the chemical formula DyI
3.[1]
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| Names | |
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| Other names
Dysprosium triiodide, triiododysprosium | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.035.888 |
| EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| 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: | |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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] 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.[4]