Ullström, Ann-Sofi
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
Abstract
The structures of dimethylsulfoxide-solvated magnesium and calcium ions have been studied in the solid state and in dimethylsulfoxide solution by X-ray crystallography and large-angle X-ray scattering (LAXS), respectively. The magnesium and calcium ions coordinate six dimethylsulfoxide molecules in both the solid state and solution with mean Mg-O and Ca-O bond distances in solid perchlorate salts of 2.062(4) and 2.303(5) angstrom, respectively. A summary of the coordination chemistry of the hydrated and solvated alkaline earth metal ions shows that beryllium(II) and magnesium ions are tetrahedral and octahedral, respectively, in all solvents studied, while calcium and strontium are eight-coordinated in square antiprismatic fashion in water, but octahedral in dimethylsulfoxide and other organic solvents. Mean M-O bond distances of the hydrated alkaline earth metal ions were used to calculate the ionic radii of the alkaline earth metal ions.
Keywords
alkaline earth metal ions; structure; hydrates; solvates; ionic radii
Published in
Journal of Coordination Chemistry
2005, volume: 58, number: 7, pages: 611-622
Publisher: TAYLOR & FRANCIS LTD
SLU Authors
Persson, Ingmar
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
UKÄ Subject classification
Inorganic Chemistry
Publication identifier
- DOI: https://doi.org/10.1080/00958970500039181
Permanent link to this page (URI)
https://res.slu.se/id/publ/7996