Hydroperoxo double hydrogen bonding: stabilization of hydroperoxo complexes exemplified by triphenylsilicon and triphenylgermanium hydroperoxides†
a Dmitry A.Grishanov,ab Andrei V.Churakov,a Alexey A.Mikhaylov,a OvadiaLev*b and Petr V.Prikhodchenko*a * Corresponding authors
a Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii prosp. 31, Moscow 119991, Russia
E-mail:prikhman@gmail.com
b The Casali Center, the Institute of Chemistry and The Harvey M. Krueger Family Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 91904, Israel
E-mail:ovadia@mail.huji.ac.il
Abstract
Triphenyl silicon hydroperoxide and its isostructural germanium complex were characterized by single crystal X-ray analysis revealing H-bonding of two triphenylhydroperoxocomplexes, with each hydroperoxo ligand acting as a hydrogen donor and a hydrogen acceptor. Only two other structures with localized protons of hydroperoxo complexes' main group elements (boron and tin) are known (compared to 130 p-block element peroxo compounds) and both exhibit the same hydroperoxo double hydrogen bonding motif. The reaction of the hydroperoxo complexes with triphenylgermanium chloride to give the dinuclear peroxobridged germanium complex demonstrates the higher reactivity of the hydroperoxo moieties compared to the peroxo moiety. DFT calculations provide an estimate of the hydroperoxo double hydrogen bond energies: 62.8 and 63.6 kJ mol−1 for triphenyl silicon, 63.6 and 65 kJ mol−1 for the germanium complex.
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Article information
- Article type
- Paper
- Submitted
- 27 Nov 2019
- Accepted
- 07 Jan 2020
- First published
- 07 Jan 2020
Permissions
Hydroperoxo double hydrogen bonding: stabilization of hydroperoxo complexes exemplified by triphenylsilicon and triphenylgermanium hydroperoxides
A. G. Medvedev, D. A. Grishanov, A. V. Churakov, A. A. Mikhaylov, O. Lev and P. V. Prikhodchenko,CrystEngComm, 2020, 22, 1922DOI: 10.1039/C9CE01882D
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