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Structure of triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato)cerium(III) as a possible fluorescent compound
Luminescence due to the d–f transition of Ce(3+) is quite rare in metal–organic complexes where concentrate quenching frequently occurs. One of the possible ways to avoid this is to design an architecture with elongated metal–metal distances. In the structure of the title complex, triaquatris(1,1...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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International Union of Crystallography
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5956343/ https://www.ncbi.nlm.nih.gov/pubmed/29850060 http://dx.doi.org/10.1107/S2056989018001135 |
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author | Koizumi, Atsuya Hasegawa, Takuya Itadani, Atsushi Toda, Kenji Zhu, Taoyun Sato, Mineo |
author_facet | Koizumi, Atsuya Hasegawa, Takuya Itadani, Atsushi Toda, Kenji Zhu, Taoyun Sato, Mineo |
author_sort | Koizumi, Atsuya |
collection | PubMed |
description | Luminescence due to the d–f transition of Ce(3+) is quite rare in metal–organic complexes where concentrate quenching frequently occurs. One of the possible ways to avoid this is to design an architecture with elongated metal–metal distances. In the structure of the title complex, triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato-κ(2) O,O′)cerium(III), [Ce(C(5)H(4)F(3)O(2))(3)(H(2)O)(3)], the Ce(III) complex is linked to neighbouring ones by hydrogen bonding. Within the complex, the Ce(III) atom is coordinated by nine O atoms from three 1,1,1-trifluoro-4-oxopentan-2-olate (tfa) anions as bidentate ligands and three water molecules as monodentate ligands. Thus, the coordination number of Ce(III) atom is nine in a monocapped square–antiprismatic polyhedron. The F atoms of all three independent CF(3) groups in tfa are disordered over two positions with occupancy ratios of about 0.8:0.2. The intermolecular hydrogen bonds between the ligands involve tfa–water interactions along the [110] and [1-10] directions, generating an overall two-dimensional layered network structure. The presence of the F atoms in the tfa anion is responsible for an increased intermolecular metal–metal distance compared to that in the analogous acetylacetonate (acac) derivatives. Fluorescence from Ce(3+) is, however, not observed. |
format | Online Article Text |
id | pubmed-5956343 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-59563432018-05-30 Structure of triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato)cerium(III) as a possible fluorescent compound Koizumi, Atsuya Hasegawa, Takuya Itadani, Atsushi Toda, Kenji Zhu, Taoyun Sato, Mineo Acta Crystallogr E Crystallogr Commun Research Communications Luminescence due to the d–f transition of Ce(3+) is quite rare in metal–organic complexes where concentrate quenching frequently occurs. One of the possible ways to avoid this is to design an architecture with elongated metal–metal distances. In the structure of the title complex, triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato-κ(2) O,O′)cerium(III), [Ce(C(5)H(4)F(3)O(2))(3)(H(2)O)(3)], the Ce(III) complex is linked to neighbouring ones by hydrogen bonding. Within the complex, the Ce(III) atom is coordinated by nine O atoms from three 1,1,1-trifluoro-4-oxopentan-2-olate (tfa) anions as bidentate ligands and three water molecules as monodentate ligands. Thus, the coordination number of Ce(III) atom is nine in a monocapped square–antiprismatic polyhedron. The F atoms of all three independent CF(3) groups in tfa are disordered over two positions with occupancy ratios of about 0.8:0.2. The intermolecular hydrogen bonds between the ligands involve tfa–water interactions along the [110] and [1-10] directions, generating an overall two-dimensional layered network structure. The presence of the F atoms in the tfa anion is responsible for an increased intermolecular metal–metal distance compared to that in the analogous acetylacetonate (acac) derivatives. Fluorescence from Ce(3+) is, however, not observed. International Union of Crystallography 2018-01-26 /pmc/articles/PMC5956343/ /pubmed/29850060 http://dx.doi.org/10.1107/S2056989018001135 Text en © Koizumi et al. 2018 http://creativecommons.org/licenses/by/2.0/uk/ This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.http://creativecommons.org/licenses/by/2.0/uk/ |
spellingShingle | Research Communications Koizumi, Atsuya Hasegawa, Takuya Itadani, Atsushi Toda, Kenji Zhu, Taoyun Sato, Mineo Structure of triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato)cerium(III) as a possible fluorescent compound |
title | Structure of triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato)cerium(III) as a possible fluorescent compound |
title_full | Structure of triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato)cerium(III) as a possible fluorescent compound |
title_fullStr | Structure of triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato)cerium(III) as a possible fluorescent compound |
title_full_unstemmed | Structure of triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato)cerium(III) as a possible fluorescent compound |
title_short | Structure of triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato)cerium(III) as a possible fluorescent compound |
title_sort | structure of triaquatris(1,1,1-trifluoro-4-oxopentan-2-olato)cerium(iii) as a possible fluorescent compound |
topic | Research Communications |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5956343/ https://www.ncbi.nlm.nih.gov/pubmed/29850060 http://dx.doi.org/10.1107/S2056989018001135 |
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