(Si(O2C6F4)2)14: self-assembly of a giant perfluorinated macrocyclic host by low-barrier Si−O bond metathesis
The dynamic covalent self-assembly of 14 units of bis(perfluorocatecholato)silane leads to [Si(O2C6F4)2]14—the first giant perfluorinated macrocycle. The oligomerization process is monitored spectroscopically, and the macrocycle analyzed by single-crystal X-ray diffraction. The molecule forms a rigi...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2020
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| In: |
Angewandte Chemie. International edition
Year: 2020, Jahrgang: 59, Heft: 50, Pages: 22510-22513 |
| ISSN: | 1521-3773 |
| DOI: | 10.1002/anie.202009942 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1002/anie.202009942 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.202009942 
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| Verfasserangaben: | Deborah Hartmann and Lutz Greb |
| Zusammenfassung: | The dynamic covalent self-assembly of 14 units of bis(perfluorocatecholato)silane leads to [Si(O2C6F4)2]14—the first giant perfluorinated macrocycle. The oligomerization process is monitored spectroscopically, and the macrocycle analyzed by single-crystal X-ray diffraction. The molecule forms a rigid cavity that can host two o-closo-dodecacarboranes. Computations rationalize the consistent and reproducible formation of the 14mer and disclose a non-catalyzed Si−O/ Si−O σ-bond metathesis with an exceptionally low energetic barrier. For the first time, the most prevalent linker in our geosphere-SiO4-is disposed to construct a shape-defined crystalline macromolecule. |
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| Beschreibung: | First published: 12 August 2020 Im Titel sind die Zahlen tiefgestellt Gesehen am 27.10.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 1521-3773 |
| DOI: | 10.1002/anie.202009942 |