Accessing the +IV Oxidation State in Molecular Complexes of Praseodymium

Journal of the American Chemical Society
Aurélien R WillauerMarinella Mazzanti

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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Citations

Jun 11, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Thaige P GompaHenry S La Pierre
Oct 21, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Luis M Aguirre QuintanaHenry S La Pierre
Sep 24, 2020·Chemistry : a European Journal·Moya A Hay, Colette Boskovic
Dec 20, 2020·Chemistry : a European Journal·Maxime TricoireGrégory Nocton
Mar 11, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Daniel KovacsK Eszter Borbas
Apr 8, 2021·Journal of the American Chemical Society·Kaiying ShiCongqing Zhu
May 25, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·V M KorshunovI V Taydakov
Jul 2, 2021·Chemical Science·Luciano BarluzziMarinella Mazzanti
Nov 26, 2020·Inorganic Chemistry·Bonnie E KlammThomas E Albrecht-Schönzart
Oct 9, 2020·Inorganic Chemistry·Roger KloditzJuliane März
Sep 6, 2021·Acta Crystallographica. Section C, Structural Chemistry·Patrycja WytrychŁukasz John

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