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Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
Studies on inclusion complexes of calix[4]arenes capped by diamide bridges with small organic molecules
Barbara Balázs1, Alajos Grün, István Bitter
1Technical Analytical Research Group of the Hungarian Academy of Sciences, Budapest University of Technology and Economics, H-1521 Budapest, Hungary.
Abstract:
The inclusion of small neutral organic guests (acetonitrile, toluene, pyrazine, butylamine, nitromethane) by cyclic calix[4]arene diamide receptors was studied by (1)H NMR spectroscopy. The binding constants determined by (1)H NMR titration, and the results obtained by T(1) relaxation measurements and DOSY confirm the importance of the acidity of the C-H bond of the guests and highlight the role of steric interactions including conformational properties of the receptors in the recognition process.
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