Threading the Calix[5]arene Annulus

Threading the Calix[5]arene Annulus

Slowly does it! Di‐n‐alkylammonium ions (such as 2⋅H+) thread the annulus of calix[5]arene 1 to yield stable [2]pseudorotaxanes. The ease of formation of this hitherto unknown family of interpenetrated supermolecules is predominantly determined by salt ion‐pairing effects, whereas the time course of...

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Veröffentlicht in:Chemistry : a European journal 2010-02, Vol.16 (8), p.2381-2385
Hauptverfasser: Gattuso, Giuseppe, Notti, Anna, Parisi, Melchiorre F., Pisagatti, Ilenia, Amato, Maria E., Pappalardo, Andrea, Pappalardo, Sebastiano
Format: Artikel
Sprache:eng
Schlagworte:
calixarenes
Cations
Chemistry
density functional calculations
Formations
ion pairs
NMR spectroscopy
pseudorotaxanes
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Beschreibung
Zusammenfassung:Slowly does it! Di‐n‐alkylammonium ions (such as 2⋅H+) thread the annulus of calix[5]arene 1 to yield stable [2]pseudorotaxanes. The ease of formation of this hitherto unknown family of interpenetrated supermolecules is predominantly determined by salt ion‐pairing effects, whereas the time course of the threading/dethreading process depends on the length of the cation alkylammonium chains.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.200902945