Volume 95 Issue 2 | p. 8 | Concentrates
Issue Date: January 9, 2017

Actinide complex covalency measured by EPR

Analysis of uranium and thorium complexes suggests further experimental data needed to benchmark computational results
Department: Science & Technology
News Channels: Analytical SCENE, Materials SCENE
Keywords: spectroscopy, Analytical chemistry, Inorganic chemistry, Chemical bonding, Physical chemistry, actinide, thorium, uranium, EPR, ESEEM, HYSCORE

Mounting evidence suggests that actinide bonds have notable covalent character, making their chemistry more akin to transition metals than lanthanides. That covalency can be directly measured using pulsed electron paramagnetic resonance spectroscopy, yielding some surprising results, reports a team from the University of Manchester (Nat. Chem. 2016, DOI: 10.1038/nchem.2692). So-called superhyperfine coupling of a metal’s unpaired electrons with ligand nuclei that have non-zero spin can . . .

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