Ion-Pair Recognition of Tetramethylammonium Salts by Halogenated Resorcinarenes

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Ngong Kodiah Beyeh
  • Dominik P. Weimann
  • Lena Kaufmann
  • Christoph A. Schalley
  • Kari Rissanen

Organisaatiot

  • University of Jyväskylä
  • Free University of Berlin

Kuvaus

The non-covalent interactions of different upper-rim-substituted C2-resorcinarenes with tetramethylammonium salts were analyzed in the gas phase in an Electrospray Ionization Fourier-transform ion-cyclotron-resonance (ESI-FTICR) mass spectrometer and by 1H NMR titrations. The order of binding strengths of the hosts towards the tetramethylammonium cation in the gas phase reflects the electronic nature of the substituents on the upper rim of the resorcinarene. In solution, however, a different trend with particularly high binding constants for halogenated resorcinarenes has been observed. This trend can be explained by a synergetic effect originating from the interaction of the halogenated resorcinarenes with the counter anions through hydrogen bonding. This study highlights the importance of weak interactions in recognition processes and points out the benefits of comparing the gas-phase data with results obtained from solution experiments.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut5552–5557
JulkaisuCHEMISTRY: A EUROPEAN JOURNAL
Vuosikerta18
Numero18
TilaJulkaistu - huhtikuuta 2012
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 11468054