Swapping structures and cations: In an acid-induced 3D-to-3D transformation at room temperature, K6Cd4Sn3Se13 is converted into K14−xHxCd15Sn12Se46. The [Cd15Sn12Se46]14− framework, which contains a tunnel network of accessible cages of labyrinthine complexity (see picture), is highly robust, acid resistant, and has excellent ion-exchange properties.
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Ding et al. (2006) studied this question.
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