Spectroscopic investigation of the different complexation and extraction properties of diastereomeric diglycolamide ligands
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Patrik Weßling
,
Michael Trumm
Abstract
(2R,2′S)-2,2′-oxybis-(N,N-didecylpropanamide) (cis-mTDDGA) and (2R,2′R)-2,2′-oxybis-(N,N-didecylpropanamide) (trans-mTDDGA) were studied using time-resolved laser fluorescence spectroscopy (TRLFS), vibronic side-band spectroscopy (VSBS) and density functional theory calculations (DFT) to find reasons for their different extraction properties. Stability constants of the respective Cm(III) and Eu(III) complexes show cis-mTDDGA to be the superior ligand which is in agreement with results from extraction experiments. cis-mTDDGA extracts Cm(III) and Eu(III) as 1:3 complexes. In case of trans-mTDDGA, 1:2 complexes of the form [M(trans-mTDDGA)2(η1-NO3)(H2O)2]2+ (M = Cm, Eu) are extracted additionally to the 1:3 complexes. VSBS and DFT confirm the presence of inner-sphere nitrate in the 1:2 complex.
Funding source: European Research Council http://dx.doi.org/10.13039/501100000781
Award Identifier / Grant number: 755171
Funding source: German Federal Ministry for Research and Education
Award Identifier / Grant number: 02NUK059A
Award Identifier / Grant number: 02NUK059C
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Author contributions: All authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This work has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (project GENIORS, grant agreement no. 755171) and the German Federal Ministry for Research and Education (grant agreement no. 02NUK059A, 02NUK059C).
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/ract-2021-1134).
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Articles in the same Issue
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Articles in the same Issue
- Frontmatter
- Original Papers
- Spectroscopic investigation of the different complexation and extraction properties of diastereomeric diglycolamide ligands
- Influence of plutonium oxidation state on the formation of molecular hydrogen, nitrous acid and nitrous oxide from alpha radiolysis of nitric acid solution
- Efficient enrichment of U(VI) by two-dimensional layered transition metal carbide composite
- Application of artificial neural networks for predicting the isotopic composition of high burn-up solid plutonium sample using the 90–105 keV gamma-spectrum region
- Efficient and selective adsorption of U(VI) by succinic acid modified iron oxide adsorbent
- Electrochemical reduction of uranium and rhenium in hydrochloric acid system
- A sensitive improved method for analyzing diffusion coefficients of Cs in compacted bentonite with different lengths
- Adsorption behavior of chromium in an aqueous suspension of δ-alumina in absence and in presence of humic substances
- A novel theranostic probe [111In]In-DO3A-NHS-nimotuzumab in glioma xenograft
- Lead-free Sb-based polymer composite for γ-ray shielding purposes
