Mössbauer effect studies on some heptavalent neptunium compounds
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 8-9,p. 971-974
- https://doi.org/10.1039/dt9720000971
Abstract
Four heptavalent neptunium compounds, Li5NpO6, [Co(en)3]NpO5,xH2O, Ba3(NpO5)2,xH2O, and Ca3(NpO5)2,-xH2O have been studied by Mössbauer spectroscopy. The measured isomer shifts of 237Np in these compounds confirm the heptavalent oxidation state of neptunium. Bond properties are inferred from the isomer-shift values on the basis of valence-bond theory. Structural properties of the neptunate(VII) anions are derived from the observed data for the quadrupole splitting and asymmetry parameter.Keywords
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