Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 25, Issue 34, Pages 8118-8126Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201901088
Keywords
carbon dioxide activation; density functional calculations; frustrated Lewis pairs; sulfur dioxide activation; X-ray diffraction
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Funding
- CEA, CNRS, the University Paris-Saclay
- CINES
- CHARMMMAT Laboratory of Excellence
- European Research Council (ERC) [336467]
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The guanidine 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) and the substituted derivatives [TBD-SiR2](+) and TBD-BR2 reacted with SO2 to give different FLP-SO2 adducts. Molecular structures, elucidated by X-ray diffraction, showed some structural similarities with the analogous CO2 adducts. Thermodynamic stabilities were both experimentally evidenced and computed through DFT calculations. The underlying parameters governing the relative stabilities of the different SO2 and CO2 adducts were discussed from a theoretical standpoint, with a focus on the influence of the Lewis acidic moiety.
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