Europium acetylacetonate
Chemical compound
From Wikipedia, the free encyclopedia
Europium acetylacetonate is a coordination complex with formula Eu(C5H7O2)3. Although this anhydrous acetylacetonate complex is widely discussed,[2] some sources suggest that it is really the dihydrate Eu(C5H7O2)3(H2O)2.[3][4]
3(H2O)2.svg)
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| Names | |
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| IUPAC name
Tris(acetylacetonato)europium(III) | |
| Systematic IUPAC name
Tris[(Z)-4-oxopent-2-en-2-olato-κ2O,O′]europium(III) | |
| Identifiers | |
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3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.034.698 |
| EC Number |
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PubChem CID |
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| UNII | |
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| Properties | |
| C15H21EuO6 | |
| Molar mass | 449.291 g·mol−1 |
| Melting point | 187 to 189 °C (369 to 372 °F; 460 to 462 K) (decomposes) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Upon attempted dehydration by heating under vacuum, the dihydrate converts to the oxo-cluster Eu4O(C5H7O2)10. This behavior is also observed for gadolinium acetylacetonate, yttrium acetylacetonate, lanthanum acetylacetonate, and erbium acetylacetonate.[5]
The electronic structure of the Eu3+
core gives the complex an unusual charge-transfer band absent in other lanthanide acetylacetonates.[6] The photoluminescent emission lines occur near 465 (blue), 525 (green), and 579 nm (yellow), and are unusually sharp, especially the yellow doublet.[7] Doping a blend of polyacrylate and polycarbonate with europium acetylacetonate enhances photoluminescence over a broad range of ultraviolet wavelengths.[8] EuFOD is a substituted derivative.