Reactions of Neptunium(V) in Alkali-Metal Hydroxides
Abstract
The preparation of two new neptunium hydroxide compounds synthesized in concentrated potassium and rubidium hydroxide is reported. The phases K4[(NpO2)2(OH)6]·4H2O and Rb4[(NpO2)4(OH)8]·2H2O 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 Np2O5 and Na[NpO2(OH)2]. 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 Np2O5 and Na[NpO2(OH)2]. Rb4[(NpO2)4(OH)8]·2H2O is a an expanded three-dimensional framework based on NpO2+ CCIs like those observed in Np2O5 and Na[NpO2(OH)2]. Together these complexes begin to develop a structural series of neptunium(V) oxides and hydroxides of varying dimensionalities within the alkali-metal series. Furthermore, the potential roles of the alkali-metal cations and neptunyl(V) CCIs in directing the resulting structures are discussed.
- Authors:
-
[1];
- Chemical Sciences and Engineering Division, Argonne National Laboratory (ANL), 9700 South Cass Avenue, Lemont, Illinois 60439, United States
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
- OSTI Identifier:
- 1859769
- Alternate Identifier(s):
- OSTI ID: 1878607
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Published Article
- Journal Name:
- Inorganic Chemistry
- Additional Journal Information:
- Journal Name: Inorganic Chemistry Journal Volume: 60 Journal Issue: 23; Journal ID: ISSN 0020-1669
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; actinides; neptunium; anions; cations; chemical structure; crystal structure; potassium
Citation Formats
Wilson, Richard E., Stegman, Samantha, and Tarlton, Michael L. Reactions of Neptunium(V) in Alkali-Metal Hydroxides. United States: N. p., 2021.
Web. doi:10.1021/acs.inorgchem.1c01858.
Wilson, Richard E., Stegman, Samantha, & Tarlton, Michael L. Reactions of Neptunium(V) in Alkali-Metal Hydroxides. United States. https://doi.org/10.1021/acs.inorgchem.1c01858
Wilson, Richard E., Stegman, Samantha, and Tarlton, Michael L. Fri .
"Reactions of Neptunium(V) in Alkali-Metal Hydroxides". United States. https://doi.org/10.1021/acs.inorgchem.1c01858.
@article{osti_1859769,
title = {Reactions of Neptunium(V) in Alkali-Metal Hydroxides},
author = {Wilson, Richard E. and Stegman, Samantha and Tarlton, Michael L.},
abstractNote = {The preparation of two new neptunium hydroxide compounds synthesized in concentrated potassium and rubidium hydroxide is reported. The phases K4[(NpO2)2(OH)6]·4H2O and Rb4[(NpO2)4(OH)8]·2H2O 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 Np2O5 and Na[NpO2(OH)2]. 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 Np2O5 and Na[NpO2(OH)2]. Rb4[(NpO2)4(OH)8]·2H2O is a an expanded three-dimensional framework based on NpO2+ CCIs like those observed in Np2O5 and Na[NpO2(OH)2]. Together these complexes begin to develop a structural series of neptunium(V) oxides and hydroxides of varying dimensionalities within the alkali-metal series. Furthermore, the potential roles of the alkali-metal cations and neptunyl(V) CCIs in directing the resulting structures are discussed.},
doi = {10.1021/acs.inorgchem.1c01858},
journal = {Inorganic Chemistry},
number = 23,
volume = 60,
place = {United States},
year = {Fri Nov 12 00:00:00 EST 2021},
month = {Fri Nov 12 00:00:00 EST 2021}
}
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