Author(s) Willauer, A.R.; Palumbo, C.T.; Fadaei-Tirani, F.; Zivkovic, I.; Douair, I.; Maron, L.; Mazzanti, M.
Journal J Am Chem Soc
Date Published 2020 Mar 11
Abstract

Out of the 14 lanthanide (Ln) ions, molecular complexes of Ln(IV) were known only for cerium and more recently terbium. Here we demonstrate that the +IV oxidation state is also accessible for the large praseodymium (Pr) cation. The oxidation of the tetrakis(triphenysiloxide) Pr(III) ate complex, [KPr(OSiPh)(THF)], , with [N(CHBr)][SbCl], affords the Pr(IV) complex [Pr(OSiPh)(MeCN)], , which is stable once isolated. The solid state structure, UV-visible spectroscopy, magnetometry, and cyclic voltammetry data along with the DFT computations of the complex unambiguously confirm the presence of Pr(IV).

DOI 10.1021/jacs.0c01204
ISSN 1520-5126
Citation J Am Chem Soc. 2020.

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