| Abstract
| - The diffuse reflectance infrared Fourier transform spectra of solid complexes 1-indanone/β-cyclodextrin(β-CD), 2-indanone/β-CD, 1‘-acetonaphthone/β-CD, and 2‘-acetonaphthone/β-CD exhibit a series of veryimportant effects induced by complexation. For the complexes 1-indanone/β-CD, 2-indanone/β-CD, and2‘-acetonaphthone/β-CD, a dramatic decrease on the intensity of the band assigned to the water deformationmode was observed, showing that these probes are deeply included in the cyclodextrin cavity, displacingthe crystallization water. Hydrogen bonding interactions involving the ketone carbonyl and the hydroxylgroups of β-CD are responsible for the stabilization of the complexes 1-indanone/β-CD and 2‘-acetonaphthone/β-CD. In what concerns the complexes 2-indanone/β-CD and 1‘-acetonaphthone/β-CD, it is suggested thatthey are stabilized only by London interactions between the aromatic ring and the cyclodextrin cavity.
|
