Abstract
Europium complexes featuring fluorinated β-diketonate ligands [thenoyltrifluoroacetone (tta), 4,4,4-trifluoro-1-phenyl-1,3-butanedione (btfac), and 1,1,1,5,5,5-hexafluoro-2,4-pentanedionate (hfac)] and nitrogen p,p′-disubstituted bipyridine and phenanthroline ligands [4,4′-dimethoxy-2,2′-bipyridine (dmbipy) and 4,7-dimethyl-1,10-phenanthroline (dmphen)] were synthesized. Their structures were determined by single crystal X-ray diffraction. Octacoordinate complexes were obtained using trifluorinated tta and btfac, while nonacoordinated complexes were produced using hexafluorinated hfac. The differences in coordination number and bond lengths of these complexes are rationalized in terms of the electronic and steric features of the ligands. UV excitation of the complexes led to red luminescence characteristic of trivalent europium ion. The high overall quantum yields observed for the europium complexes bearing hfac and dmbipy or dmphen ligands are rationalized in terms of the relatively high ligand-to-metal energy transfer efficiencies.
Original language | English (US) |
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Pages (from-to) | 3543-3552 |
Number of pages | 10 |
Journal | Inorganica Chimica Acta |
Volume | 360 |
Issue number | 11 |
DOIs | |
State | Published - Aug 1 2007 |
Externally published | Yes |
Keywords
- Europium complex
- Luminescence property
- X-ray crystallography
- β-Diketonates
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry
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Dive into the research topics of 'Adducts of europium β-diketonates with nitrogen p,p′-disubstituted bipyridine and phenanthroline ligands: Synthesis, structural characterization, and luminescence studies'. Together they form a unique fingerprint.Datasets
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CCDC 618406: Experimental Crystal Structure Determination
De Silva, C. R. (Contributor), Maeyer, J. R. (Contributor), Wang, R. (Contributor), Nichol, G. S. (Contributor) & Zheng, Z. (Contributor), Cambridge Crystallographic Data Centre, 2008
DOI: 10.5517/ccnrhlg, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccnrhlg&sid=DataCite
Dataset
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CCDC 618404: Experimental Crystal Structure Determination
De Silva, C. R. (Creator), Maeyer, J. R. (Creator), Wang, R. (Creator), Nichol, G. S. (Creator) & Zheng, Z. (Creator), Cambridge Crystallographic Data Centre, 2008
DOI: 10.5517/ccnrhjd, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccnrhjd&sid=DataCite
Dataset
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CCDC 618408: Experimental Crystal Structure Determination
De Silva, C. R. (Contributor), Maeyer, J. R. (Contributor), Wang, R. (Contributor), Nichol, G. S. (Contributor) & Zheng, Z. (Contributor), Cambridge Crystallographic Data Centre, 2008
DOI: 10.5517/ccnrhnj, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccnrhnj&sid=DataCite
Dataset