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Di-Benzo-18-Crown-6 and its Derivatives as Ligands in the Search for Ion Channels

Fromm, Katharina M. ; Bergougnant, Rémi D. ; Robin, Adeline Y.

In: Zeitschrift für anorganische und allgemeine Chemie, 2006, vol. 632, no. 5, p. 828 - 836

Transport properties of solid state crown ether channel systems

Fromm, Katharina M. ; Bergougnant, Rémi D.

In: Solid State Sciences, 2007, vol. 9, no. 7, p. 580-587

Single crystals of [(H₂O)⊂(DB18C6)(μ₂-H₂O)2/2][(H₃O)⊂(DB18C6)(μ₂-H₂O)2/2]I₃ 1 were shown to possess ideally stacked crown ether molecules which form channels running in one direction through the solid state structure. By immersion of single crystals of 1 into NaOH, ion exchange takes place to yield the compound...

From simple rings to one-dimensional channels with calix[8]arenes, water clusters, and alkali metal ions

Bergougnant, Rémi D. ; Robin, Adeline Y. ; Fromm, Katharina M.

In: Tetrahedron, 2007, vol. 63, no. 44, p. 10751-10757

The macrocycle 4-tert-butylcalix[8]arene (L) was reacted with alkali metal carbonates (Li₂CO₃, Na₂CO₃, K₂CO₃, Rb₂CO₃, and Cs₂CO₃) at the interface of a biphasic THF/water system. Needle-like crystals with a general formula [Ax(4-tert-butylcalix[8]arene-xH)(THF)y(H₂O)z] (with A=Li, Na, K, Rb, Cs,...