Title: Organometallic neptunium(III) complexes
Authors: DUTKIEWICZ MICHAL SEWERYNFARNABY Joy H.APOSTOLIDIS ChristosCOLINEAU EricWALTER OLAFMAGNANI NicolaGARDINER Michael G.LOVE Jason B.KALTSOYANNIS NikolasCACIUFFO RobertoARNOLD Polly L.
Citation: NATURE CHEMISTRY vol. 8 p. 797-802
Publisher: NATURE PUBLISHING GROUP
Publication Year: 2016
JRC N°: JRC97927
ISSN: 1755-4330
URI: http://www.nature.com/nchem/journal/v8/n8/full/nchem.2520.html
http://publications.jrc.ec.europa.eu/repository/handle/JRC97927
DOI: 10.1038/NCHEM.2520
Type: Articles in periodicals and books
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.
JRC Directorate:Nuclear Safety and Security

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