AI Article Synopsis
- Two new neptunium hydroxide compounds were synthesized using concentrated potassium and rubidium hydroxide, specifically K[(NpO)(OH)]·4HO and Rb[(NpO)(OH)]·2HO.
- The chemical structures of these compounds were determined through single-crystal X-ray diffraction, with Raman spectra also provided for analysis.
- The newly created compounds show different structural features, with K[(NpO)(OH)] having infinite chains and Rb[(NpO)(OH)] forming a three-dimensional framework, contributing to understanding the structural variety of neptunium(V) oxides and hydroxides.
Article Abstract
The preparation of two new neptunium hydroxide compounds synthesized in concentrated potassium and rubidium hydroxide is reported. The phases K[(NpO)(OH)]·4HO and Rb[(NpO)(OH)]·2HO were prepared and their chemical structures determined using single-crystal X-ray diffraction. Raman spectra of the compounds are also presented. The newly synthesized phases are structurally related to NpO and Na[NpO(OH)]. The potassium-containing phase reported here consists of infinite chains of edge-sharing neptunium hydroxide polyhedra but lacking the cation-cation interactions (CCIs) observed in NpO and Na[NpO(OH)]. Rb[(NpO)(OH)]·2HO is a an expanded three-dimensional framework based on NpO CCIs like those observed in NpO and Na[NpO(OH)]. Together these complexes begin to develop a structural series of neptunium(V) oxides and hydroxides of varying dimensionalities within the alkali-metal series. The potential roles of the alkali-metal cations and neptunyl(V) CCIs in directing the resulting structures are discussed.
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| http://dx.doi.org/10.1021/acs.inorgchem.1c01858 | DOI Listing |
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