A Structural and Spectroscopic Study of the First Uranyl Selenocyanate, [Et4N]3[UO2(NCSe)5]

Stefano Nuzzo, Michelle P. Browne, Brendan Twamley, Michael E. G. Lyons, Robert J. Baker

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Abstract

The first example of a uranyl selenocyanate compound is reported. The compound[Et4N]3[UO2(NCSe)5] has been synthesized and fully characterized by vibrational and multinuclear(1H,13C{1H} and77Se{1H}) NMR spectroscopy. The photophysical properties have also been recordedand trends in a series of uranyl pseudohalides discussed. Spectroscopic evidence shows that theU–NCSe bonding is principally ionic. An electrochemical study revealed that the reduced uranyl(V)species is unstable to disproportionation and a ligand based oxidation is also observed. The structureof [Et4N]4[UO2(NCSe)5][NCSe] is also presented and Se ̈ ̈ ̈H–C hydrogen bonding and Se ̈ ̈ ̈Sechalcogen–chalcogen interactions are seen.
Original languageEnglish
Article number4
Number of pages8
JournalInorganics
Volume4
Issue number1
DOIs
Publication statusPublished - 16 Feb 2016

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