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The γ-polymorph of AgZnPO(4) with an ABW zeolite-type framework topology
The γ-polymorph of the title compound, silver zinc orthophosphate, was synthesized under hydrothermal conditions. The structure consists of ZnO(4), PO(4) and AgO(4) units. The coordination spheres of Zn(II) and P(V) are tetrahedral, whereas the Ag(I) atom is considerably distorted from a tetrah...
Autores principales: | , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2010
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3009017/ https://www.ncbi.nlm.nih.gov/pubmed/21588789 http://dx.doi.org/10.1107/S1600536810038717 |
Sumario: | The γ-polymorph of the title compound, silver zinc orthophosphate, was synthesized under hydrothermal conditions. The structure consists of ZnO(4), PO(4) and AgO(4) units. The coordination spheres of Zn(II) and P(V) are tetrahedral, whereas the Ag(I) atom is considerably distorted from a tetrahedral coordination. Each O atom is linked to each of the three cations. An elliptic eight-membered ring system is formed by corner-sharing of alternating PO(4) and ZnO(4) tetrahedra, leading to a framework with an ABW-type zeolite structure. The framework encloses channels running parallel to [100] in which the Ag cations are located, with Ag⋯Ag contacts of 3.099 (3) Å. This short distance results from d (10)⋯d (10) interactions, which play a substantial role in the crystal packing. The structure of γ-AgZnPO(4) is distinct from the two other polymorphs α-AgZnPO(4) and β-AgZnPO(4), but is isotypic with NaZnPO(4)-ABW, NaCoPO(4)-ABW and NH(4)CoPO(4)-ABW. |
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