Anion dependent ion pairing in concentrated ytterbium halide solutions

We have studied ion pairing of ytterbium halide solutions. THz spectra (30-400 cm−1) of aqueous YbCl3 and YbBr3 solutions reveal fundamental differences in the hydration structures of YbCl3 and YbBr3 at high salt concentrations: While for YbBr3 no indications for a changing local hydration environme...

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Bibliographic Details
Published in:The Journal of chemical physics 2018-06, Vol.148 (22), p.222802-222802
Main Authors: Klinkhammer, Christina, Böhm, Fabian, Sharma, Vinay, Schwaab, Gerhard, Seitz, Michael, Havenith, Martina
Format: Article
Language:English
Subjects:
Anions
Hydration
Ion pairs
Rangefinding
Ytterbium
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Summary:We have studied ion pairing of ytterbium halide solutions. THz spectra (30-400 cm−1) of aqueous YbCl3 and YbBr3 solutions reveal fundamental differences in the hydration structures of YbCl3 and YbBr3 at high salt concentrations: While for YbBr3 no indications for a changing local hydration environment of the ions were experimentally observed within the measured concentration range, the spectra of YbCl3 pointed towards formation of weak contact ion pairs. The proposed anion specificity for ion pairing was confirmed by supplementary Raman measurements.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.5016549