CATION-BINDING PROPERTIES OF A NOVEL 1,3-ALTERNATE CALIX[4]BISCROWN -FORMATION OF 1 1-COMPLEX AND 1/2-COMPLEX AND UNIQUE CATION TUNNELING ACROSS A CALIX[4]ARENE CAVITY/

Authors
KOH KN ARAKI K SHINKAI S ASFARI Z VICENS J
Citation
Kn. Koh et al., CATION-BINDING PROPERTIES OF A NOVEL 1,3-ALTERNATE CALIX[4]BISCROWN -FORMATION OF 1 1-COMPLEX AND 1/2-COMPLEX AND UNIQUE CATION TUNNELING ACROSS A CALIX[4]ARENE CAVITY/, Tetrahedron letters, 36(34), 1995, pp. 6095-6098
Citations number
12
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
36
Issue
34
Year of publication
1995
Pages
6095 - 6098
Database
ISI
SICI code
0040-4039(1995)36:34<6095:CPOAN1>2.0.ZU;2-Q
Abstract
A novel 1,3-alternate calix[4]biscrown was synthesized by the reaction of calix[4]arene and tetraethyleneglycol ditosylate in the presence o f K-2 CO3. It formed a 1:2 complex as well as a 1:1 complex with alkal i metal and ammonium cations and the cation tunneling phenomenon acros s the calix[4]arene cavity was detectable with H-1 NMR spectroscopy ev en at room temperature.