Aqueous Bismuth Titanium-Oxo Sulfate Cluster Speciation and Crystallization
| Autor: | Melissa K. Santala, Pedro I. Molina, Clément Falaise, Karoly Kozma, May Nyman |
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| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
010405 organic chemistry Inorganic chemistry Oxide chemistry.chemical_element General Chemistry 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences law.invention Bismuth Metal chemistry.chemical_compound chemistry Dynamic light scattering law visual_art Cluster (physics) visual_art.visual_art_medium Crystallization Sulfate |
| Zdroj: | Angewandte Chemie (International ed. in English). 56(51) |
| ISSN: | 1521-3773 |
| Popis: | Inorganic aqueous metal-oxo clusters are both functional 'molecular metal-oxides', and intermediates to understand metal oxide growth from water. There has been a recent surge in discovery of aqueous Ti-oxo clusters but without extensive solution characterization. We use small-angle and total X-ray scattering, dynamic light scattering, transmission electron microscopy and single-crystal X-ray structure shows that heterometals (i.e. bismuth) stabilize labile Ti-oxo sulfate clusters in aqueous solution. We report [Ti22Bi7O41(OH)(OH2)30(SO4)12]2+ that features edge-sharing between the Ti and Bi polyhedra, different from the dominant corner-linking of Ti-oxo clusters. We propose that Bi stabilizes the Ti-polyhedra which are synergistically stabilized by the bidentate sulfates. Gained stability and potential functionality from heterometals is incentive to develop more broadly the landscape of heterometallic Ti-oxo clusters. |
| Databáze: | OpenAIRE |
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