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Updated: Sep 19, 2025

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Four-electron oxidation and one-electron reduction of the bis(terphenylthiolate) U(II) complex, U(SAriPr6)2 [AriPr6 =
Joshua D Queen1, Eric Ma1, Ahmadreza Rajabi1
1Department of Chemistry, University of California, Irvine, California 92617, USA. filipp.furche@uci.edu.
Abstract:
The utility of the sterically bulky terphenylthiolate ligand, (SAriPr6)1- in expanding uranium reductive chemistry has been explored. Reduction of U(SAriPr6)2I forms the U(II) complex, U(SAriPr6)2, in which the metal is protected by the flanking arene rings of the ligand, but they move out of the way to accommodate the four electron reduction of PhNNPh to form the U(VI) bis(imido) product U(SAriPr6)2(NPh)2(THF)2. The KC8 reduction of U(SAriPr6)2 generates a more reduced complex, KU(μ-SAriPr6)2, initially identified by a -2.55 V vs. Fc+/Fc electrochemical reduction event in THF.
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