Niobium uptake by a [P8W48O184]40−macrocyclic polyanion
| Autor: | Vadim V. Yanshole, Nikolay B. Kompankov, Victoria V. Volchek, Maxim N. Sokolov, Nicolas P. Martin, May Nyman, Alexandra A. Shmakova, Pavel A. Abramov |
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| Rok vydání: | 2019 |
| Předmět: |
Thermogravimetric analysis
Aqueous solution Small-angle X-ray scattering Niobium chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences Crystallography chemistry Elemental analysis Inductively coupled plasma atomic emission spectroscopy Materials Chemistry 0210 nano-technology Single crystal Natural bond orbital |
| Zdroj: | New Journal of Chemistry. 43:9943-9952 |
| ISSN: | 1369-9261 1144-0546 |
| DOI: | 10.1039/c9nj01907c |
| Popis: | Reactions of inorganic macrocyclic polytungstate cavitands K28Li5H7[P8W48O184]·92H2O or Li17(NH4)21H2[P8W48O184]·85H2O with (NH4)[NbO(C2O4)2(H2O)2]·3H2O (Nb–Ox) in aqueous solution lead to incorporation of up to five {NbO(H2O)}3+ units into the {P8W48} cavity. The most stable species contain four {NbO(H2O)}3+ units. The uptake of {NbO(H2O)}3+ was determined by corroborative methods including single crystal XRD, inductively coupled plasma atomic emission spectroscopy (ICP-AES), 31P and 13C nuclear magnetic resonance (NMR), C–H–N elemental analysis (EA) and thermal gravimetric analysis (TGA). Solution speciation of the Nb-encapsulating macrocycles was studied by HPLC-ICP-AES and small angle X-ray scattering (SAXS). |
| Databáze: | OpenAIRE |
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