Europium(II) chloride
Appearance
Names | |
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Other names
Europium dichloride
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Identifiers | |
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3D model (
JSmol ) |
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ChemSpider | |
ECHA InfoCard
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100.033.973 |
EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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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
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europium diiodide
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Other cations
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thulium dichloride
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Related compounds
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europium trichloride
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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
- ISBN 3-540-60035-3, S. 446–447
- ^ ISSN 0044-457X.
- .
- ^ ISSN 0044-2313.
- ISSN 0026-9247.
- ISSN 0044-2313.