Interactions between cations and sugars. Part 8.—Gibbs energies, enthalpies and entropies of association of divalent and trivalent metal cations with xylitol and glucitol in water at 298.15 K
- 1 January 1995
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions
- Vol. 91 (17) , 2771-2777
- https://doi.org/10.1039/ft9959102771
Abstract
Microcalorimetry has been used to determine the standard Gibbs energies, enthalpies and entropies of association of several divalent and trivalent metal cations, including alkaline-earth-metal and lanthanide cations, with xylitol and D-glucitol (sorbitol) in water at 298.15 K. Following a procedure previously used for small sugars, the contributions solely characterizing the specific interaction between the cation and the complexing triol of the ligand were isolated. It appears that xylitol and D-glucitol form weak complexes of comparable strength, and that all the stability constants are smaller than 10. As observed previously with D-ribose, the strongest complexes are formed with the trivalent lanthanide cations. However, there is no clear relationship between the thermodynamic properties of complexation and the size or charge of the cation. Xylitol and D-glucitol appear to be extremely sensitive to the inner-sphere hydration number change occurring within the lanthanide series. Furthermore, both ligands show a selectivity towards the lanthanide cations that is comparable to that observed with much stronger ligands such as acetate, glycolate or murexide.Keywords
This publication has 33 references indexed in Scilit:
- Molecular Dynamics Simulation Study of Lanthanide Ions Ln3+ in Aqueous Solution Including Water Polarization. Change in Coordination Number from 9 to 8 along the SeriesJournal of the American Chemical Society, 1995
- Interactions between cations and sugars. Part 7.—Gibbs energies, enthalpies and entropies of association of the trivalent lanthanide cations with ribose in water at 298.15 KJournal of the Chemical Society, Faraday Transactions, 1993
- High-field nuclear magnetic resonance and molecular dynamics investigations of alditol conformations in aqueous and non-aqueous solventsJournal of the Chemical Society, Faraday Transactions, 1991
- Recent developments in solvation and dynamics of the lanthanide(III) ionsPure and Applied Chemistry, 1988
- Equilibrium and dynamics of the binding of calcium ion to sorbitol (D-glucitol)Australian Journal of Chemistry, 1981
- Stability constants of (hydroxy)carboxylate‐ and alditol‐calcium(II) complexes in aqueous medium as determined by a solubility methodRecueil des Travaux Chimiques des Pays-Bas, 1979
- Aqueous lanthanide shift reagents. 4. Interaction of praseodymium(3+), neodymium(3+), and europium(3+) ions with xylitol. Origin of induced shifts in polyolsJournal of the American Chemical Society, 1977
- 13C NMR study of the complex formation of sorbitol (glucitol) with multivalent cations in aqueous solution using lanthanide(III) nitrates as shift reagentsRecueil des Travaux Chimiques des Pays-Bas, 1977
- 1H‐NMR study of the complex formation of alditols with multivalent cations in aqueous solution using praseodymium(III) nitrate as shift reagentRecueil des Travaux Chimiques des Pays-Bas, 1975
- Apparent Molal Volumes and Heat Capacities of Alkaline Earth Chlorides in Water at 25 °CCanadian Journal of Chemistry, 1974