Pentapotassium europium(III) dilithium decafluoride, K5EuLi2F10
The title compound, K5EuLi2F10, belongs to so-called self-activated materials containing lanthanoid ions within the matrix. A common feature of these systems is a large separation between the closest lanthanoid ions, which is one of the crucial factors governing the self-quenching of luminescence. T...
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International Union of Crystallography
2009-11-01
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Online Access: | http://scripts.iucr.org/cgi-bin/paper?S1600536809044055 |
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doaj-320fbca0f31345f782a48958992756592020-11-25T01:38:00ZengInternational Union of CrystallographyActa Crystallographica Section E1600-53682009-11-016511i82i8210.1107/S1600536809044055Pentapotassium europium(III) dilithium decafluoride, K5EuLi2F10Anna GagorThe title compound, K5EuLi2F10, belongs to so-called self-activated materials containing lanthanoid ions within the matrix. A common feature of these systems is a large separation between the closest lanthanoid ions, which is one of the crucial factors governing the self-quenching of luminescence. The crystal structure of K5EuLi2F10 is isotypic with other K5RELi2F10 compounds (RE = Nd, Pr). As expected from the lanthanoid contraction, the unit-cell volume for crystal with Eu3+ ions is the smallest of the three structures. Accordingly, the corresponding interatomic RE—RE distances are shorter. In the structure, distorted EuF8 dodecahedra and two different LiF4 tetrahedra, all with m symmetry, are present, forming sheets parallel to (100). The isolated EuF8 dodecahedra exhibit a mean Eu—F distance of 2.356 Å. The K+ cations are located within and between the sheets, leading to highly irregular KFx polyhedra (x = 8–9) around the alkali metal cations. http://scripts.iucr.org/cgi-bin/paper?S1600536809044055 |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Anna Gagor |
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Anna Gagor Pentapotassium europium(III) dilithium decafluoride, K5EuLi2F10 Acta Crystallographica Section E |
author_facet |
Anna Gagor |
author_sort |
Anna Gagor |
title |
Pentapotassium europium(III) dilithium decafluoride, K5EuLi2F10 |
title_short |
Pentapotassium europium(III) dilithium decafluoride, K5EuLi2F10 |
title_full |
Pentapotassium europium(III) dilithium decafluoride, K5EuLi2F10 |
title_fullStr |
Pentapotassium europium(III) dilithium decafluoride, K5EuLi2F10 |
title_full_unstemmed |
Pentapotassium europium(III) dilithium decafluoride, K5EuLi2F10 |
title_sort |
pentapotassium europium(iii) dilithium decafluoride, k5euli2f10 |
publisher |
International Union of Crystallography |
series |
Acta Crystallographica Section E |
issn |
1600-5368 |
publishDate |
2009-11-01 |
description |
The title compound, K5EuLi2F10, belongs to so-called self-activated materials containing lanthanoid ions within the matrix. A common feature of these systems is a large separation between the closest lanthanoid ions, which is one of the crucial factors governing the self-quenching of luminescence. The crystal structure of K5EuLi2F10 is isotypic with other K5RELi2F10 compounds (RE = Nd, Pr). As expected from the lanthanoid contraction, the unit-cell volume for crystal with Eu3+ ions is the smallest of the three structures. Accordingly, the corresponding interatomic RE—RE distances are shorter. In the structure, distorted EuF8 dodecahedra and two different LiF4 tetrahedra, all with m symmetry, are present, forming sheets parallel to (100). The isolated EuF8 dodecahedra exhibit a mean Eu—F distance of 2.356 Å. The K+ cations are located within and between the sheets, leading to highly irregular KFx polyhedra (x = 8–9) around the alkali metal cations. |
url |
http://scripts.iucr.org/cgi-bin/paper?S1600536809044055 |
work_keys_str_mv |
AT annagagor pentapotassiumeuropiumiiidilithiumdecafluoridek5euli2f10 |
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