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A correlation between isomer shifts of237Np Mössbauer spectra and coordination numbers of Np atoms in neptunyl(V) compounds

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Abstract

Five neptunyl(V) compounds were synthesized and studied by237Np Mössbauer spectroscopy. The isomer shifts (δ) of the Mössbauer spectra ranged from −18.6 to −19.1 mm/s for the compounds with Np atoms surrounded by 7 oxygen atoms (coordination number (CN) 7). On the other hand, the larger value of δ was obtained for the compound with CN 8. from the comparison of the present results with those reported on neptunyl(V) and (VI) compounds, it is concluded that there is a correlation between the δ and the CN for neptunyl(V) compounds, and the distribution of δ is narrower for neptunyl(V) compounds than that of neptunyl(VI) compounds.

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Saeki, M., Nakada, M., Nakamoto, T. et al. A correlation between isomer shifts of237Np Mössbauer spectra and coordination numbers of Np atoms in neptunyl(V) compounds. J Radioanal Nucl Chem 239, 221–225 (1999). https://doi.org/10.1007/BF02349486

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  • DOI: https://doi.org/10.1007/BF02349486

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