Synthesis and Single-Electron Oxidation of Bulky Bis(m-terphenyl)chalcogenides: The Quest for Kinetically Stabilized Radical Cations

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В журнале  Chemistry—A European Journal (IF 5,020) опубликована статья с участием сотрудников Института  к.х.н. Д.С. Одинцова (нс ЛЭАСМ)  и д.х.н.   Л.А. Шундрина (зав. лаб. ЛЭАСМ):

Synthesis and Single-Electron Oxidation of Bulky Bis(m-terphenyl)chalcogenides: The Quest for Kinetically Stabilized Radical Cations

Daniel Duvinage, Dr. Farzin Mostaghimi, Mattis Damrath, Julian Spils, Pascal Komorr, Dr. Danila S. Odintsov, Prof. Dr. Matvey Fedin, Prof. Dr. Leonid A. Shundrin, Dr. Stefan Mebs, Prof. Dr. Jens Beckmann  

In memory of Professor Robert West.
Chemistry—A European Journal, Volume29, Issue11, February 21, 2023 e202203498

Graphical Abstract

 The first kinetically stabilized diaryltelluride radical cation [(2,6-Mes2C6H3)2Te][B(C6F5)4] was obtained by electrochemical and chemical oxidation of the neutral parent telluride (2,6-Mes2C6H3)2Te.

Abstract

Sterically encumbered bis(m-terphenyl)chalcogenides, (2,6-Mes2C6H3)2E (E=S, Se, Te) were obtained by the reaction of the chalcogen tetrafluorides, EF4, with three equivalents of m-terphenyl lithium, 2,6-Mes2C6H3Li. The single-electron oxidation of (2,6-Mes2C6H3)2Te using XeF2/K[B(C6F5)4] afforded the radical cation [(2,6-Mes2C6H3)2Te][B(C6F5)4] that was isolated and fully characterized. The electrochemical oxidation of the lighter homologs (2,6-Mes2C6H3)2E (E=S, Se) was irreversible and impaired by rapid decomposition.

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