Related Experiment Video
Updated: Jun 4, 2025

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
Published on: August 2, 2012
Cooperative Dynamics and Hydration of Aqueous D-Mannitol and myo-Inositol
Iwona Płowaś-Korus1, Paweł Korus2, Richard Buchner3
1Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznan, Poland.
Abstract:
The cooperative dynamics and hydration of D-mannitol and myo-inositol in aqueous solution at 25 °C were investigated by broad-band dielectric relaxation spectroscopy (DRS) for solute concentrations c < 0.9M. The recorded spectra, covering the frequency range 0.05 ≤ ν/GHz ≤ 50, can be described as a superposition of three Debye-type relaxation processes. The determined total effective hydration numbers, Zt, as well as the effective dipole moments, μeff, of D-mannitol and myo-inositol do not depend on solute concentration. The Zt values obtained for both sugar alcohols are significantly smaller than that of the previously studied xylitol. In contrast to aqueous xylitol, the dielectric spectra also showed no indication of the formation of D-mannitol or myo-inositol aggregates.
Related Concept Videos
Intermolecular Forces
Aqueous Solutions and Heats of Hydration
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
Common Ion Effect
Intermolecular Forces in Solutions
When the strengths of the intermolecular forces of attraction between solute and solvent species in a solution are no different than those present in the separated components, the solution is formed with no accompanying energy change. Such a solution is called an ideal solution. A mixture of ideal gases (or gases such as helium and argon,...
Aldehydes and Ketones with Water: Hydrate Formation
The formation of hydrates is a reversible reaction. Hydrate formation is influenced by steric and electronic factors accompanying the alkyl substituents on the carbonyl group: The rate of hydrate formation increases with a decrease in the number of alkyl groups attached to the carbonyl carbon. Hence,...
Formation of Complex Ions

