Uranium-ligand multiple bonding in uranyl analogues, [L=U=L]n+, and the inverse trans influence

la Pierre HS, Meyer K (2013)


Publication Type: Journal article, Review article

Publication year: 2013

Journal

Original Authors: La Pierre H.S., Meyer K.

Publisher: American Chemical Society

Book Volume: 52

Pages Range: 529-539

Journal Issue: 2

DOI: 10.1021/ic302412j

Abstract

The societal importance of uranium complexes containing the uranyl moiety [O=U=O] continues to grow with the ongoing international nuclear enterprise and associated accumulating legacy waste. Further studies of the electronic structure of uranyl and its analogues are imperative for the development of crucial technologies, including lanthanide/actinide extractants and chemical and environmental remediation methodologies. Actinide oxo halides are a subset of the growing class of actinyl (uranyl) analogues. The understanding of their electronic structures links the detailed spectroscopic studies of uranyl, indicating the role of the pseudocore 6p orbitals in U-O bonding, to hypotheses about the 6p orbitals' role in the chemical bonding of uranyl analogues. These actinide oxo halides are a very small class of actinide compounds that present the inverse trans influence (ITI). This class of complexes was, until recently, limited to two crystallographically characterized compounds, namely, [UClO][PPh] and [PaCl O][NEt]. These complexes are important because they give a readily and clearly defined experimental observable: the difference between the M-X and M-X (here X = Cl) bond lengths in the solid state. This bond metric is a sensitive probe for the role of 6p, 6d, and 5f orbitals, as well as electrostatic interactions, in determining their electronic structure. This Viewpoint Article reviews the theoretical, experimental, and synthetic work on the ITI in actinide complexes and contextualizes it within broader studies on the electronic structure of uranyl and its analogues. Furthermore, our recent work on the ITI in high-valent uranium(V/VI) oxo and imido complexes is described as a whole. This work builds on the extant synthetic literature on the ITI and provides design parameters for the synthesis and characterization of high-valent uranium-ligand multiple bonds. © 2012 American Chemical Society.

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How to cite

APA:

la Pierre, H.S., & Meyer, K. (2013). Uranium-ligand multiple bonding in uranyl analogues, [L=U=L]n+, and the inverse trans influence. Inorganic Chemistry, 52(2), 529-539. https://dx.doi.org/10.1021/ic302412j

MLA:

la Pierre, Henry Storms, and Karsten Meyer. "Uranium-ligand multiple bonding in uranyl analogues, [L=U=L]n+, and the inverse trans influence." Inorganic Chemistry 52.2 (2013): 529-539.

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