Europium(II) iodide

Europium(II) iodide is the iodide salt of divalent europium cation.

Europium(II) iodide
Names
IUPAC name
Europium(II) iodide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.040.641
EC Number
  • 244-721-0
  • InChI=1S/Eu.2HI/h;2*1H/q+2;;/p-2
    Key: DPYXWFUVSMSNNV-UHFFFAOYSA-L
  • I[Eu]I
Properties
Molar mass 405.77 g/mol
Appearance Tea Yellow Powder
Melting point 510 °C (950 °F; 783 K)
Boiling point 1,120 °C (2,050 °F; 1,390 K)
Soluble in THF
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Preparation

Europium(II) iodide can be prepared in a handful of ways, including:
The reduction of europium(III) iodide with hydrogen gas at 350 °C:[1]

2 EuI3 + H2 → 2 EuI2 + 2 HI

Thermal decomposition of europium(III) iodide at 200 °C:[1]

2 EuI3 → 2 EuI2 + 2 I2

Reaction of europium with mercury(II) iodide:[1]

Eu + HgI2 → Eu I2 + Hg

Reaction of europium with ammonium iodide:[1]

Eu + 2 NH4I → EuI2 + 2 NH3 + H2

References
  1. Brauer, Georg (1975). Handbook of Preparative Inorganic Chemistry. ISBN 3-432-02328-6.
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