Despite the notable progress in the stabilization of main group radicals by NHCs and cAACs, no germanium radicals have been isolated so far due to synthetic challenges. Stabilization of neutral :E(I)R(.bul.) (E = Si, Ge) radicals is an uphill task, as these reactive transient species are highly susceptible to dimerization. Herein, we report the synthesis of acyclic neutral germanium(I) radicals Cy-cAAC:GeN(SiMe3)Dip (1) and Me-cAAC:GeN(SiPh3)Mes (2) obtained by the reduction of Ar(SiR3)NGeCl3 with KC8 in the presence of cAAC. Compounds 1 and 2 are well characterized by single crystal X-ray structural analysis, cyclic voltammetry, and EPR spectroscopy. Furthermore, the structure and bonding of compounds 1 and 2 have been investigated by theoretical methods.on SciFinder (R)
%0 Journal Article
%1 Siddiqui.2019b
%A Siddiqui, Mujahuddin M.
%A Sarkar, Samir Kumar
%A Sinhababu, Soumen
%A Ruth, Paul Niklas
%A Herbst-Irmer, Regine
%A Stalke, Dietmar
%A Ghosh, Munmun
%A Roesky, Herbert W.
%A Fu, Mingxing
%A Zhao, Lili
%A Frenking, Gernot
%A Casanova, David
%A Schwederski, Brigitte
%A Kaim, Wolfgang
%D 2019
%J Journal of the American Chemical Society
%K imported
%N 5
%P 1908--1912
%T Isolation of Transient Acyclic Germanium(I) Radicals Stabilized by Cyclic Alkyl(amino) Carbenes
%V 141
%X Despite the notable progress in the stabilization of main group radicals by NHCs and cAACs, no germanium radicals have been isolated so far due to synthetic challenges. Stabilization of neutral :E(I)R(.bul.) (E = Si, Ge) radicals is an uphill task, as these reactive transient species are highly susceptible to dimerization. Herein, we report the synthesis of acyclic neutral germanium(I) radicals Cy-cAAC:GeN(SiMe3)Dip (1) and Me-cAAC:GeN(SiPh3)Mes (2) obtained by the reduction of Ar(SiR3)NGeCl3 with KC8 in the presence of cAAC. Compounds 1 and 2 are well characterized by single crystal X-ray structural analysis, cyclic voltammetry, and EPR spectroscopy. Furthermore, the structure and bonding of compounds 1 and 2 have been investigated by theoretical methods.on SciFinder (R)
@article{Siddiqui.2019b,
abstract = {Despite the notable progress in the stabilization of main group radicals by NHCs and cAACs, no germanium radicals have been isolated so far due to synthetic challenges. Stabilization of neutral [:E(I)R](.bul.) (E = Si, Ge) radicals is an uphill task, as these reactive transient species are highly susceptible to dimerization. Herein, we report the synthesis of acyclic neutral germanium(I) radicals Cy-cAAC:GeN(SiMe3)Dip (1) and Me-cAAC:GeN(SiPh3)Mes (2) obtained by the reduction of [Ar(SiR3)NGeCl3] with KC8 in the presence of cAAC. Compounds 1 and 2 are well characterized by single crystal X-ray structural analysis, cyclic voltammetry, and EPR spectroscopy. Furthermore, the structure and bonding of compounds 1 and 2 have been investigated by theoretical methods.[on SciFinder (R)]},
added-at = {2019-07-15T13:41:23.000+0200},
author = {Siddiqui, Mujahuddin M. and Sarkar, Samir Kumar and Sinhababu, Soumen and Ruth, Paul Niklas and Herbst-Irmer, Regine and Stalke, Dietmar and Ghosh, Munmun and Roesky, Herbert W. and Fu, Mingxing and Zhao, Lili and Frenking, Gernot and Casanova, David and Schwederski, Brigitte and Kaim, Wolfgang},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2ce315d65a6609de21231bb0eefd3b4e2/b_schwederski},
interhash = {6f9a0d63bff80ebb3016d356c59494fc},
intrahash = {ce315d65a6609de21231bb0eefd3b4e2},
issn = {0002-7863},
journal = {Journal of the American Chemical Society},
keywords = {imported},
number = 5,
pages = {1908--1912},
timestamp = {2019-07-15T11:42:10.000+0200},
title = {Isolation of Transient Acyclic Germanium(I) Radicals Stabilized by Cyclic Alkyl(amino) Carbenes},
volume = 141,
year = 2019
}
