Journal Article

FZJ-2020-02680

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Structural Variations in Complex Sodium Thorium Arsenates

Hao, Y. ; Alekseev, E. (Corresponding author)FZJ* ; Klepov, V. V. ; Yu, N. (Corresponding author)FZJ*

2020
Wiley-VCH Weinheim

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Please use a persistent id in citations: http://hdl.handle.net/2128/25910  doi:10.1002/ejic.202000492

Abstract: 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.

Note: Arbeit ist am IEK-6 entstanden

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Contributing Institute(s):

1. Grundlagen der Elektrochemie (IEK-9)
2. Nukleare Entsorgung und Reaktorsicherheit (IEK-6)

Research Program(s):

1. 131 - Electrochemical Storage (POF3-131) (POF3-131)
2. 161 - Nuclear Waste Management (POF3-161) (POF3-161)

Appears in the scientific report 2020

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Database coverage:
; ; ; Chemical Reactions ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; Index Chemicus ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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