Reversible CO<inf>2</inf> Addition to a Si=O Bond and Synthesis of a Persistent SiO<inf>2</inf>–CO<inf>2</inf> Cycloadduct Stabilized by a Lewis Donor–Acceptor Ligand

Ricardo Rodriguez, Isabel Alvarado-Beltran, Jérémy Saouli, Nathalie Saffon-Merceron, Antoine Baceiredo, Vicenç Branchadell, Tsuyoshi Kato

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9 Citations (Scopus)

Abstract

© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim The donor-stabilized sila-β-lactone 1 reacts with CO2 via a remarkable reversible [2+2]-cycloaddition reaction to form the spiro-cyclic silicon carbonate derivative 2. Furthermore, photolysis of 2 under pressure of CO2 affords the first persistent SiO2–CO2 cycloadduct 3, presenting a Si2O4-like structure, which is stabilized by a Lewis donor–acceptor type ligand. As predicted by theoretical calculations, in marked contrast to the thermodynamically stable SiO2 dimer, the SiO2–CO2 mixed cycloadduct 3 is labile and readily releases CO2.
Original languageEnglish
Pages (from-to)2635-2638
JournalAngewandte Chemie - International Edition
Volume57
Issue number10
DOIs
Publication statusPublished - 1 Mar 2018

Keywords

  • donor-stabilized molecules
  • silanones
  • silicon carbonate
  • silicon dioxide

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