Accessing the plus IV Oxidation State in Molecular Complexes of Praseodymium
Willauer, Aurelien R.; Palumbo, Chad T.; Fadaei-Tirani, Farzaneh; Zivkovic, Ivica; Douair, Iskander; Maron, Laurent; Mazzanti, Marinella
2020

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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(OSiPh3)(4)(THF)(3)], 1-Pr-Ph, with [N(C6H4Br)(3)][SbCl6], affords the Pr(IV) complex [Pr(OSiPh3)(4)(MeCN)(2)], 2-Pr-Ph, which is stable once isolated. The solid state structure, UV-visible spectroscopy, magnetometry, and cyclic voltammetry data along with the DFT computations of the 2-Pr-Ph complex unambiguously confirm the presence of Pr(IV).

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Title Accessing the plus IV Oxidation State in Molecular Complexes of Praseodymium
Author(s) Willauer, Aurelien R. ; Palumbo, Chad T. ; Fadaei-Tirani, Farzaneh ; Zivkovic, Ivica ; Douair, Iskander ; Maron, Laurent ; Mazzanti, Marinella
Published in Journal Of The American Chemical Society
Volume 142
Issue 12
Pages 5538-5542
Date 2020-03-25
ISSN 0002-7863
1520-5126
Keywords
DOI https://doi.org/10.1021/jacs.0c01204
Other identifier(s) View record in Web of Science
Laboratories GCC
LQM
Record Appears in Scientific production and competences > SB - School of Basic Sciences > ISIC - Institute of Chemical Sciences and Engineering > GCC - Group of Coordination Chemistry
Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LQM - Laboratory for Quantum Magnetism
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Grant FNS: 200021_178793
Record creation date 2020-05-02

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