Retardation of the Molecular Rotation of p-Nitrophenolate Ion in the Cavity of a Positively Charged Derivative of α-Cyclodextrin by Electrostatic Interactions
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<SUP>1</SUP>H NMR signal for the C(5)-H of A, D glucose residues of bis[6<SUP>A</SUP>,6<SUP>D</SUP>-(1-pyridinio)-6<SUP>A</SUP>,6<SUP>D</SUP>-deoxy]-α-cyclodextrin shifted downfield, whereas those of B, E and C, F residues shifted upfield, with the addition of <I>p</I>-nitrophenol at pD 11.3. This infers that the molecular rotation of the guest is retarded in the CD cavity.
- Chemistry Letters
Chemistry Letters 2000(8), 960-961, 2000-08-05
The Chemical Society of Japan