Title: Organometallic Neptunium Chemistry
Authors: ARNOLD POLLY L.DUTKIEWICZ MICHAL SEWERYNWALTER OLAF
Citation: CHEMICAL REVIEWS vol. 117 no. 17 p. 11460-11475
Publisher: AMER CHEMICAL SOC
Publication Year: 2017
JRC N°: JRC106529
ISSN: 0009-2665
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC106529
DOI: 10.1021/acs.chemrev.7b00192
Type: Articles in periodicals and books
Abstract: Fifty years have passed since the foundation of organometallic neptunium chemistry, and yet only a handful of complexes have been reported, and even fewer fully characterised. Yet increasingly, combined synthetic/spectroscopic/computational studies are demonstrating how covalently binding, soft, carbocyclic organometallic ligands provide an excellent platform for advancing the fundamental understanding of the differences in orbital contributions and covalency in f-block metal – ligand bonding. Understanding the subtleties are key to the safe handling and separations of the highly radioactive nuclei. This review describes the complexes that have been synthesised to date, presents a critical assessment on the successes and difficulties in their analysis, and the bonding information they have provided. Because of the recent work to start new Np air-sensitive inorganic chemistry labs, the importance of radioactivity, the basics of Np decay and its ramifications (including the radiochemical synthesis of one organometallic) and the available anhydrous starting materials are also surveyed. The review also highlights a range of instances in which important differences in the chemical behaviour between Np and its closest neighbours, uranium and plutonium, are found.
JRC Directorate:Nuclear Safety and Security

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