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Isolation of Transient Acyclic Germanium(I) Radicals Stabilized by Cyclic Alkyl(amino) Carbenes
Mujahuddin Siddiqui M., Samir Sarkar Kumar, Soumen Sinhababu, Paul Ruth Niklas, Regine Herbst-Irmer, Dietmar Stalke, , Mingxing Fu, Lili Zhao, David CasanovaShow More
Published in
2019
Volume: 141
   
Issue: 5
Pages: 1908 - 1912
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] (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(SiMe 3 )Dip (1) and Me-cAAC:GeN(SiPh 3 )Mes (2) obtained by the reduction of [Ar(SiR 3 )NGeCl 3 ] with KC 8 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.
About the journal
JournalJournal of the American Chemical Society
ISSN15205126