Publications by authors named "Tamara M Duckworth"
Article Synopsis
- Actinide elements like U, Np, and Pu often form actinyl ions (AnO) in their +V and +VI oxidation states, which are significant for understanding environmental behavior and nuclear processes.
- Research on [AnO(saldien)] complexes shows that their molecular structures share similarities, with some variations caused by actinide contraction, while their redox potentials increase from U to Np and then decrease to Pu, indicating distinct electronic configurations.
- The study's findings, supported by DFT-based calculations, enhance our understanding of actinide oxidation states, which is crucial for various applications, including nuclear fuel management and advancements in spintronics.
Article Synopsis
- Researchers synthesized isostructural early actinide complexes [An(pyrophen)] (where An = Th, U, Np, Pu) to study how a conjugated framework in the ligand backbone affects actinide bonding.
- Solid state analysis through single-crystal X-ray diffraction revealed that the ligands bind in an almost orthogonal arrangement to the actinide center, with larger actinides allowing additional solvent coordination.
- NMR studies indicated symmetrical complexes in solution and suggested ionic binding predominantly, while also hinting at significant covalency in U, Np, and Pu compounds, allowing comparisons with related N-donor ligands.
Here, we report the synthesis of the 6-(6-methyl-1,2,4,5-tetrazine-3-yl)-2,2'-bipyridine (MTB) ligand that has been developed for lanthanide/actinide separation. A multimethod study of the complexation of MTB with trivalent actinide and lanthanide ions is presented. Single-crystal X-ray diffraction measurements reveal the formation of [Ce(MTB)(NO)], [Pr(MTB)(NO)HO], and [Ln(MTB)(NO)MeCN] (Ln = Nd, Sm, Eu, Gd).
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