Soluble Heteropolyniobates from the Bottom of Group IA

Soluble Heteropolyniobates from the Bottom of Group IA

Surprising solubility: While it is already well known that [Nb6O19]8− salts exhibit an unusual solubility trend, that is, Cs>Rb>K>Na>Li, the heteropolyniobates of Cs and Rb had not yet been crystallized. These very soluble entities have now been obtained from solution by a simple and uni...

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Veröffentlicht in:Angewandte Chemie International Edition 2011-12, Vol.50 (52), p.12514-12517
Hauptverfasser: Hou, Yu, Nyman, May, Rodriguez, Mark A.
Format: Artikel
Sprache:eng
Schlagworte:
Crystallization
hydrothermal synthesis
polyoxometalates
polyoxoniobates
Solubility
structure elucidation
Trends
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Zusammenfassung:Surprising solubility: While it is already well known that [Nb6O19]8− salts exhibit an unusual solubility trend, that is, Cs>Rb>K>Na>Li, the heteropolyniobates of Cs and Rb had not yet been crystallized. These very soluble entities have now been obtained from solution by a simple and universal process. New polyoxoniobate geometries are thus unveiled, and the [SiNb12O40]16− Keggin ion is characterized in solution for the first time.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201104478