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For a recent article on CH/π interactions see e.g. and references therein
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To the best of our knowledge, the role played by rigidity of calixarene receptors on their complexation efficiencies in apolar solvents has never been systematically studied. Only a few studies have been reported so far in the literature in which the efficiency vs. rigidity has been taken into account, see e.g. Ref. 5
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To the best of our knowledge, the role played by rigidity of calixarene receptors on their complexation efficiencies in apolar solvents has never been systematically studied. Only a few studies have been reported so far in the literature in which the efficiency vs. rigidity has been taken into account, see e.g. Ref. 5.
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17
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0347710687
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85031068668
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note
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3). A tentative explanation of such behavior could derive from the possibility of the two ureido sidearms to mutually interact, hence decreasing their ability to cooperatively act as H-bond donor groups.
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1H NMR NOESY experiments were performed at different mixing times for the undoubting assignment of the NOE cross-peaks. A further ROESY experiment confirmed the spatial proximity of DMSO methyl groups with several calix[4]arene aromatic protons as depicted in Figure 5
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1H NMR NOESY experiments were performed at different mixing times for the undoubting assignment of the NOE cross-peaks. A further ROESY experiment confirmed the spatial proximity of DMSO methyl groups with several calix[4]arene aromatic protons as depicted in Figure 5.
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