Organometallic neptunium(III) complexes

Michał S. Dutkiewicz, Joy H. Farnaby, Christos Apostolidis, Eric Colineau, Olaf Walter, Nicola Magnani, Michael G. Gardiner, Jason Love, Nikolas Kaltsoyannis, Roberto Caciuffo, Polly Arnold

Research output: Contribution to journalArticlepeer-review

Abstract

Studies of transuranic organometallic complexes provide a particularly valuable insight into covalent contributions to the metal–ligand bonding, in which the subtle differences between the transuranium actinide ions and their lighter lanthanide counterparts are of fundamental importance for the effective remediation of nuclear waste. Unlike the organometallic chemistry of uranium, which has focused strongly on UIII and has seen some spectacular advances, that of the transuranics is significantly technically more challenging and has remained dormant. In the case of neptunium, it is limited mainly to NpIV. Here we report the synthesis of three new NpIII organometallic compounds and the characterization of their molecular and electronic structures. These studies suggest that NpIII complexes could act as single-molecule magnets, and that the lower oxidation state of NpII is chemically accessible. In comparison with lanthanide analogues, significant d- and f-electron contributions to key NpIII orbitals are observed, which shows that fundamental neptunium organometallic chemistry can provide new insights into the behaviour of f-elements.
Original languageEnglish
Pages (from-to)797–802
Number of pages6
JournalNature Chemistry
Volume8
Early online date23 May 2016
DOIs
Publication statusPublished - Aug 2016

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