Europium acetylacetonate

Europium acetylacetonate[1]

Names
IUPAC name

Tris(acetylacetonato)europium(III)

Systematic IUPAC name

Tris[(Z)-4-oxopent-2-en-2-olato-κ2O,O′]europium(III)

Identifiers

CAS Number

* 14284-86-7 anhydrous
* 52081-76-2 dihydrate

3D model (JSmol)

* Interactive image

ChemSpider |

* 76060

EC Number |

* 238-185-7

PubChem CID

* 14455607

UNII |

* X5US2R5ZCX Y

InChI

* InChI=1S/3C5H7O2.Eu/c3*1-4(6)3-5(2)7;/h3*3H,1-2H3;/q3*-1;+3

Key: YMTKZYSHNNXTIJ-UHFFFAOYSA-N

SMILES

* CC(=CC(=O)C)[O-].CC(=CC(=O)C)[O-].CC(=CC(=O)C)[O-].[Eu+3]

Properties

Chemical formula

| 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).

Infobox references

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]

Upon attempted dehydration by heating under vacuum, the dihydrate converts to the oxo-cluster Eu
4O(C

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.

## References

1. ↑ Europium acetylacetonate at American Elements
2. ↑ Ilmi, Rashid; Kansız, Sevgi; Dege, Necmi; Khan, Muhammad S. (2019). "Synthesis, structure, Hirshfeld surface analysis and photophysical studies of red emitting europium acetylacetonate complex incorporating a phenanthroline derivative". Journal of Photochemistry and Photobiology A: Chemistry 377: 268–281. doi:10.1016/j.jphotochem.2019.03.036. Bibcode: 2019JPPA..377..268I.
3. ↑ Okawara, Toru; Ishihama, Kohei; Takehara, Kenji (2014). "Redetermination of diaquatris(4-oxopent-2-en-2-olato-κ2 O , O ′)lanthanum(III)". Acta Crystallographica Section E 70 (7): m258–m259. doi:10.1107/S1600536814013336. PMID 25161523.
4. ↑ Phillips, Theodore; Sands, Donald E.; Wagner, William F. (1968). "Crystal and Molecular Structure of Diaquotris(acetylacetonato)lanthanum(III)". Inorganic Chemistry 7 (11): 2295–2299. doi:10.1021/ic50069a024.
5. ↑ Tamang, Sem Raj; Singh, Arpita; Bedi, Deepika; Bazkiaei, Adineh Rezaei; Warner, Audrey A.; Glogau, Keeley; McDonald, Corey; Unruh, Daniel K. et al. (2020). "Polynuclear Lanthanide–Diketonato Clusters for the Catalytic Hydroboration of Carboxamides and Esters". Nat. Catal. 3 (2): 154–162. doi:10.1038/s41929-019-0405-5.
6. ↑ Napier, G.D.R.; Neilson, J.D.; Shepherd, T.M. (March 1975). "Charge-transfer excited state in tris(acetylacetonato) europium(III)". Chemical Physics Letters 31 (2): 328–330. doi:10.1016/0009-2614(75)85032-9. Bibcode: 1975CPL....31..328N.
7. ↑ Freed, Simon; Weissman, S. I.; Fortess, Fred E. (April 1941). "The Absorption Spectra of Ions of Europium and the Electric Fields within Some Coördination Compounds". Journal of the American Chemical Society 63 (4): 1079–1085. doi:10.1021/ja01849a053. Bibcode: 1941JAChS..63.1079F. https://pubs.acs.org/doi/pdf/10.1021/ja01849a053.
8. ↑ Bonzanini, R.; Dias, D.T.; Girotto, E.M.; Muniz, E.C.; Baesso, M.L.; Caiut, J.M.A.; Messaddeq, Y.; Ribeiro, S.J.L. et al. (March 2006). "Spectroscopic properties of polycarbonate and poly(methyl methacrylate) blends doped with europium (III) acetylacetonate" (in en). Journal of Luminescence 117 (1): 61–67. doi:10.1016/j.jlumin.2005.04.010. Bibcode: 2006JLum..117...61B.

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Europium compounds

Europium(II)|

* EuS
* EuBr2

Europium(III)|

* EuBr3
* EuCl3
* Eu2O3
* Eu(NO3)3
* BaEuTiO4

| Organoeuropium(III)|

* EuFOD
* Eu(C5H7O2)3

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