TY - JOUR
T1 - Reversible CO2 Addition to a Si=O Bond and Synthesis of a Persistent SiO2–CO2 Cycloadduct Stabilized by a Lewis Donor–Acceptor Ligand
AU - Rodriguez, Ricardo
AU - Alvarado-Beltran, Isabel
AU - Saouli, Jérémy
AU - Saffon-Merceron, Nathalie
AU - Baceiredo, Antoine
AU - Branchadell, Vicenç
AU - Kato, Tsuyoshi
PY - 2018/3/1
Y1 - 2018/3/1
N2 - © 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.
AB - © 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.
KW - donor-stabilized molecules
KW - silanones
KW - silicon carbonate
KW - silicon dioxide
U2 - 10.1002/anie.201709787
DO - 10.1002/anie.201709787
M3 - Article
VL - 57
SP - 2635
EP - 2638
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
SN - 1433-7851
IS - 10
ER -