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Svetlana Velmar-Janković
| Names | |
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| Other names
Triiodoyttrium, yttrium triiodide,[1] yttrium(3+) triiodide
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.033.383 |
| EC Number |
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PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| YI 3 | |
| Molar mass | 469.6193 g/mol |
| Appearance | Colorless crystals |
| Melting point | 1,000 °C (1,830 °F; 1,270 K) |
| Boiling point | 1,310 °C (2,390 °F; 1,580 K) |
| Soluble | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Yttrium iodide is a binary inorganic compound, a salt of yttrium and hydroiodic acid with the formula YI
3.[2][3] The compound forms colorless crystals, soluble in water.
Synthesis
1. Heating yttrium and iodine in an inert atmosphere:
- 2 Y + I2 → 2 YI3
2. Heating yttrium oxide with ammonium iodide:
- Y2O3 + 6 NH4I → 2 YI3 + 6 NH3 + 3 H2O
It can also be obtained by reacting yttrium oxide or yttrium hydroxide with hydroiodic acid.
Physical properties
Yttrium iodide forms colorless flaky crystals. The crystal structure is that of the BiI
3 structure type.[4]
It dissolves well in water and ethanol. Does not dissolve in diethyl ether.
It also occurs as a tri- and hexahydrate.[5]
Applications
A precursor for YBCO superconducting materials in a lower temperature preparation.[6]
References
- ^ "yttrium triiodide". webbook.nist.gov. Retrieved 2 November 2021.
- ^ Quarterly Metallurgical Progress Report. United States Atomic Energy Commission, Technical Information Service Extension. June 1960. p. 5. Retrieved 2 November 2021.
- ^ "Yttrium Iodide". American Elements. Retrieved 2 November 2021.
- ^ Jongen, L.; Meyer, G. (1 August 2005). "Yttrium triiodide, YI3". Acta Crystallographica Section E. 61 (8): i151 – i152. Bibcode:2005AcCrE..61I.151J. doi:10.1107/S1600536805019847. ISSN 1600-5368. Retrieved 2 November 2021.
- ^ Emeleus, H.J.; Sharpe, Alan G. (1981). Advances in Inorganic Chemistry and Radiochemistry. Academic Press. p. 65. ISBN 0-12-023624-9.
- ^ "Yttrium(III) iodide". Sigma Aldrich. Retrieved 2 November 2021.