4 years ago

Organosilicon Radicals with Si–H and Si–Me Bonds from Commodity Precursors

Organosilicon Radicals with Si–H and Si–Me Bonds from Commodity Precursors
Brigitte Schwederski, A. Claudia Stückl, Gernot Frenking, Soumen Sinhababu, Herbert W. Roesky, Wolfgang Kaim, Prinson P. Samuel, Birger Dittrich, Anna V. Luebben, Subrata Kundu, Alexa Paretzki, Diego M. Andrada
The cyclic alkyl(amino) carbene (cAAC) stabilized biradicals of composition (cAAC)2SiH2 (1), (cAAC)SiMe2-SiMe2(cAAC) (2), and (cAAC)SiMeCl-SiMeCl(cAAC) (3) have been isolated as molecular species. All the compounds are stable at room temperature for more than 6 months under inert conditions in the solid state. All radical species were fully characterized by single-crystal X-ray structure analysis and EPR spectroscopy. Furthermore, the structure and bonding of compounds 13 have been investigated by theoretical methods. Compound 1 contains the SiH2 moiety and this is the first instance, where we have isolated 1 without an acceptor molecule.

Publisher URL: http://dx.doi.org/10.1021/jacs.7b06610

DOI: 10.1021/jacs.7b06610

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