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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Dixon, David A.
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article
Dehydration of UO2Cl2·3H2O and Nd(NO3)3·6H2O with a Soft Donor Ligand and Comparison of Their Interactions through X-ray Diffraction and Theoretical Investigation
Abstract
<p>We investigated whether the relatively Lewis basic imidazole-2-thiones could be used to substitute water ligands bound to f-element cations and generate f-element soft donor complexes. Reactions of 1,3-diethylimidazole-2-thione (C<sub>2</sub>C<sub>2</sub>ImT) with Nd(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O and UO<sub>2</sub>Cl<sub>2</sub>·3H<sub>2</sub>O led to the isolation of the anhydrous thione complexes Nd(NO<sub>3</sub>)<sub>3</sub>(C<sub>2</sub>C<sub>2</sub>ImT)<sub>3</sub> and UO<sub>2</sub>Cl<sub>2</sub>(C<sub>2</sub>C<sub>2</sub>ImT)<sub>2</sub>, characterized by single crystal X-ray diffraction. Differences in the strength of metal-thione interactions have been examined by means of the crystal structure analysis and density functional theory (DFT) calculations. The C<sub>2</sub>C<sub>2</sub>ImT ligands were found to be affected by both coordination and noncovalent interactions, making it impossible to deconvolute the effects of one from the other. Calculated partial atomic charges indicated greater ligand-to-metal charge transfer in the [UO<sub>2</sub>]<sup>2+</sup> complex, indicative of a stronger interaction. The reactivity of C<sub>2</sub>C<sub>2</sub>ImT demonstrates its usefulness in the preparation of f-element soft donor complexes from readily available hydrates that could be useful intermediates for promoting the coordination and studying the effects of soft donor anions.</p>