Europium(II) chloride

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Europium dichloride
)
Europium(II) chloride
Names
Other names
Europium dichloride
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
 100.033.973 Edit this at Wikidata
EC Number
  • 237-386-7
  • InChI=1S/2ClH.Eu/h2*1H;/q;;+2/p-2
    Key: BMANZYKPCBPZFG-UHFFFAOYSA-L
  • Cl[Eu]Cl
Properties
Cl2Eu
Molar mass 222.86 g·mol−1
Appearance white solid
Density 4.86 g·cm−3[1]
Melting point 738 °C (1,011 K)[2]
Boiling point 2,190 °C (2,460 K)[2]
Related compounds
Other anions
europium diiodide
Other cations
thulium dichloride
Related compounds
europium trichloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Europium(II) chloride is an inorganic compound with a chemical formula EuCl2. When it is irradiated by ultraviolet light, it has bright blue fluorescence.[3]

Preparation

Europium dichloride can be produced by reducing

hydrogen gas at high temperature:[4]

2 EuCl3 + H2 → 2 EuCl2 + 2 HCl

If dry

THF, it can also produce europium dichloride:[5]

2 EuCl3 + 2 LiBH4 → 2 EuCl2 + 2 LiCl + H2↑ + B2H6↑

Properties

Europium dichloride can form yellow ammonia complexes:EuCl2•8NH3, and can dissolve to pale yellowish EuCl2•NH3.[4] Europium dichloride can react with europium hydride at 120-bar H2, producing EuClH that fluoresces green.[6]

References

  1. ISBN 3-540-60035-3
    , S. 446–447
  2. ^
    ISSN 0044-457X
    .
  3. doi:10.1016/0022-5088(69)90017-4
    .
  4. ^
    ISSN 0044-2313
    .
  5. ISSN 0026-9247
    .
  6. ISSN 0044-2313
    .
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