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Soluble Heteropolyniobates from the Bottom of Group IA
Author(s) -
Hou Yu,
Nyman May,
Rodriguez Mark A.
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201104478
Surprising solubility: While it is already well known that [Nb 6 O 19 ] 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 [SiNb 12 O 40 ] 16− Keggin ion is characterized in solution for the first time.