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Cover Picture: Soluble Heteropolyniobates from the Bottom of Group IA (Angew. Chem. Int. Ed. 52/2011)
Author(s) -
Hou Yu,
Nyman May,
Rodriguez Mark A.
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201106642
Subject(s) - solubility , alkali metal , aqueous solution , cover (algebra) , chemistry , ion , group (periodic table) , inorganic chemistry , metal , polymer chemistry , crystallography , chemical engineering , organic chemistry , mechanical engineering , engineering
Polyoxoniobates (PONb) differ from nearly all other polyanionic clusters in their unusual solubility behavior. In their Communication on page 12 514 ff. , M. Nyman and co‐workers show that the Cs salts of PONb are the most soluble and the Li salts the least. The opposite trend holds for other polyoxometalates and anionic clusters, owing to factors such as the strong inner‐sphere complexation ability of large alkali‐metal ions. The excellent solubility of the Rb and Cs heteropolyniobates offers a unique system for aqueous ion‐association studies.