| Numéro |
J. Phys. Colloques
Volume 47, Numéro C8, Décembre 1986
EXAFS and Near Edge Structure IV
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|---|---|---|
| Page(s) | C8-809 - C8-812 | |
| DOI | https://doi.org/10.1051/jphyscol:19868155 | |
EXAFS and Near Edge Structure IV
J. Phys. Colloques 47 (1986) C8-809-C8-812
DOI: 10.1051/jphyscol:19868155
1 Institut für Experimentalphysik, Universität Kiel, Olshausenstrasse 40, D-2300 Kiel 1, F.R.G.
2 Fachhochschule Ostfriesland, Fachbereich Naturwissenschaftliche Technik, Constantiaplatz 4, D-2970 Emden, F.R.G.
J. Phys. Colloques 47 (1986) C8-809-C8-812
DOI: 10.1051/jphyscol:19868155
EXAFS-STUDY OF THE Zn2+ COORDINATION IN AQUEOUS HALIDE SOLUTIONS
P. DREIER1 et P. RABE21 Institut für Experimentalphysik, Universität Kiel, Olshausenstrasse 40, D-2300 Kiel 1, F.R.G.
2 Fachhochschule Ostfriesland, Fachbereich Naturwissenschaftliche Technik, Constantiaplatz 4, D-2970 Emden, F.R.G.
Abstract
Aqueous solutions of ZnCl2, ZnBr2 and ZnI2 in the concentration range from 0.1 molal up to saturation have been studied by EXAFS experiments at the zinc K-edge. EXAFS spectra of the crystalline compounds of ZnCl2, ZnBr2, ZnI2 and ZnSO4*7H2O have been used as references. I n the low concentration range up to 0.5 molal a complete hydration of the zinc ions by 6 - 7 water molecules is observed. At high concentrations above 5 molal the mean local coordination around the zinc ions consists of halide ions and water molecules.