Add time:08/02/2019         Source:sciencedirect.com

Nineteen new uranium complexes, eighteen of which contain the element in the very unusual oxidation state of five, and one of which contains quadrivalent uranium complexed for the first time by an arsenic donor ligand, are reported. The novel uranium(V) compounds include, for the first time, ligands whose donor atoms are nitrogen, phosphorus, arsenic, bismuth, sulfur, selenium and tellurium. The compounds, all prepared under a strictly inert atmosphere, were characterized by elemental analysis, color, decomposition temperature, magnetic moment, ESR average g value (and signal width), i.r. spectroscopy and, in part, by NMR and visible, near i.r., near u.v. spectroscopy, and mass spectrometry.

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