Yttrium iodide

Yttrium iodide

Names
Other names Triiodoyttrium, yttrium triiodide, [1] yttrium(3+) triiodide
Identifiers
CAS Number	13470-38-7  Y
3D model (JSmol)	Interactive image
ChemSpider	75345
ECHA InfoCard	100.033.383
EC Number	236-737-1
PubChem CID	83510
UNII	IWJ2Y80D1J  Y
CompTox Dashboard (EPA)	DTXSID9065499
InChI InChI=1S/3HI.Y/h3*1H;/q;;;+3/p-3 Key: LFWQXIMAKJCMJL-UHFFFAOYSA-K
SMILES [Y](I)(I)I
Properties
Chemical formula	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)
Solubility in water	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 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

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.