NMR Relaxation Time Studies of Ionophoric Calixarene Esters
- 1 March 1990
- journal article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 19 (3) , 455-458
- https://doi.org/10.1246/cl.1990.455
Abstract
Relaxation times of ethoxycarbonylmethyl derivatives of p-t-butylcalix[n]arenes (n = 4, 6, and 8) were estimated for the first time with 1H NMR. It was shown that the benzene units feature a “seesaw” motion around the ArCH2Ar circle and the motion is suppressed by Na+ serving as a template ion.This publication has 7 references indexed in Scilit:
- Formation of Solvent-Separated Ion Pairs in Calixarene Ester–Alkali Picrate ComplexesBulletin of the Chemical Society of Japan, 1989
- p-t-Butylcalix[4]arene tetra-acetamide: a new strong receptor for alkali cations [1]Journal of inclusion phenomena and molecular recognition in chemistry, 1988
- The preparation and properties of a new lipophilic sodium selective ether ester ligand derived from p-t-butylcalix[4]areneTetrahedron, 1986
- Calixarenes. 15. The formation of complexes of calixarenes with neutral organic molecules in solutionJournal of the American Chemical Society, 1985
- Ab initio heats of formation of medium-sized hydrocarbons. 3. The valence isomers of benzeneJournal of the American Chemical Society, 1985
- CalixarenesAccounts of Chemical Research, 1983
- Measurement of Spin Relaxation in Complex SystemsThe Journal of Chemical Physics, 1968