This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1002/ejic.202000492 in citations.
Please use the identifier: http://hdl.handle.net/2128/25910 in citations.
Structural Variations in Complex Sodium Thorium Arsenates
Structural Variations in Complex Sodium Thorium Arsenates
Three new sodium thorium arsenates, Na5Th4(AsO4)7 (1 ), Na5Th(AsO4)3 (2 ), and Na4Th(As2O7)2 (3 ) were synthesized via a high temperature route and their structures and optical properties were studied. Compound 1 adopts a three‐dimensional structure that consists of tetrameric fundamental building b...
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Personal Name(s): | Hao, Yucheng |
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Alekseev, Evgeny (Corresponding author) / Klepov, Vladislav V. / Yu, Na (Corresponding author) | |
Contributing Institute: |
Nukleare Entsorgung; IEK-6 Grundlagen der Elektrochemie; IEK-9 |
Published in: | European journal of inorganic chemistry, 2020 (2020) 33, S. 3187-3193 |
Imprint: |
Weinheim
Wiley-VCH
2020
|
DOI: |
10.1002/ejic.202000492 |
Document Type: |
Journal Article |
Research Program: |
Nuclear Waste Management Electrochemical Storage |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/25910 in citations.
Three new sodium thorium arsenates, Na5Th4(AsO4)7 (1 ), Na5Th(AsO4)3 (2 ), and Na4Th(As2O7)2 (3 ) were synthesized via a high temperature route and their structures and optical properties were studied. Compound 1 adopts a three‐dimensional structure that consists of tetrameric fundamental building blocks (FBBs) [Th4(AsO4)7]5–, which are constructed by ThO8 and ThO9 polyhedra. The structures of 2 and 3 are based on open frameworks with channels running along the a or c axes, respectively, which are occupied by Na cations. Structural relations between the structures of 2 and 3 have been discussed regarding their composition. In contrast to the other two compounds, the arsenate anions in the structure of 2 play role of bridging ligands and do not connect more than two Th atoms. Owing to this, the underlying net of this compound contains only Th nodes has a lon topology. The Raman spectra of 1 and 2 contain similar peaks due to As–O vibrations of AsO4 groups, while the Raman spectrum of 3 differs significantly owing to the presence of As–O–As bridging group in As2O74– anions. |