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.

Yttrium iodide
Names
Other names
Triiodoyttrium, yttrium triiodide,[1] yttrium(3+) triiodide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.383 Edit this at Wikidata
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).

Synthesis

edit

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

edit

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

edit

A precursor for YBCO superconducting materials in a lower temperature preparation.[6]

References

edit
  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. Bibcode:2005AcCrE..61I.151J. 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.