Yttrium iodide
Names
Other names
Triiodoyttrium, yttrium triiodide,[1] yttrium(3+) triiodide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.383
EC Number
  • 236-737-1
UNII
  • InChI=1S/3HI.Y/h3*1H;/q;;;+3/p-3
    Key: LFWQXIMAKJCMJL-UHFFFAOYSA-K
  • [Y](I)(I)I
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).
Infobox references

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. Heating yttrium oxide with ammonium iodide:

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

  1. ↑ "yttrium triiodide". webbook.nist.gov. Retrieved 2 November 2021.
  2. ↑ Quarterly Metallurgical Progress Report. United States Atomic Energy Commission, Technical Information Service Extension. June 1960. p. 5. Retrieved 2 November 2021.
  3. ↑ "Yttrium Iodide". American Elements. Retrieved 2 November 2021.
  4. ↑ Jongen, L.; Meyer, G. (1 August 2005). "Yttrium triiodide, YI3". Acta Crystallographica Section E. 61 (8): i151–i152. doi:10.1107/S1600536805019847. ISSN 1600-5368. Retrieved 2 November 2021.
  5. ↑ Emeleus, H.J.; Sharpe, Alan G. (1981). Advances in Inorganic Chemistry and Radiochemistry. Academic Press. p. 65. ISBN 0-12-023624-9.
  6. ↑ "Yttrium(III) iodide". Sigma Aldrich. Retrieved 2 November 2021.
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