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Updated: Dec 22, 2025
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Mixed uranyl and neptunyl cation-cation interaction-driven clusters: structures, energetic stability, and nuclear
Paweł Tecmer1, Frank Schindler, Aleksandra Leszczyk
1Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Toruń, Grudziadzka 5, 87-100 Torun, Poland. ptecmer@fizyka.umk.pl k.boguslawski@fizyka.umk.pl.
This study explores cation-cation interactions (CCI) in uranyl and neptunyl complexes. Analyzing electric field gradients helps distinguish different CCI types based on structure and charge.
Area of Science:
- Quantum Chemistry
- Actinide Chemistry
- Nuclear Quadrupole Interactions
Background:
- Cation-cation interactions (CCI) are crucial in actinide complex chemistry.
- Uranyl (UO2^n+) and neptunyl (NpO2^n+) are key actinide ions with complex behaviors.
Purpose of the Study:
- Investigate the stability of D-shaped and T-shaped structural rearrangements in mixed uranyl-neptunyl CCI complexes.
- Characterize nuclear quadrupole interactions in bare actinyl ions and CCI clusters.
- Differentiate CCI types using electric field gradients.
Main Methods:
- State-of-the-art quantum chemical calculations.
- Analysis of structural rearrangements (D-shaped, T-shaped).
- Scrutiny of nuclear quadrupole interactions and electric field gradients.
Main Results:
- Reported electric field gradients and nuclear quadrupole coupling constants for neptunyls for the first time.
- Observed similarities between bare neptunyl and uranyl nuclear quadrupole interactions.
- Demonstrated that CCI formation introduces asymmetry and allows differentiation of CCI types by analyzing electric field gradients at U and Np nuclei.
Conclusions:
- Quantum chemical calculations provide insights into mixed uranyl-neptunyl CCI complexes.
- Nuclear quadrupole interactions are sensitive probes for characterizing actinyl species and their interactions.
- Electric field gradients are key to distinguishing CCI types based on structure and charge.
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