Premium
Cover Picture: The Tungstogermanate [Ce 20 Ge 10 W 100 O 376 (OH) 4 (H 2 O) 30 ] 56− : A Polyoxometalate Containing 20 Cerium(III) Atoms (Angew. Chem. Int. Ed. 32/2007)
Author(s) -
Bassil Bassem S.,
Dickman Michael H.,
Römer Isabella,
von der Kammer Bernd,
Kortz Ulrich
Publication year - 2007
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.200790155
Subject(s) - polyoxometalate , cover (algebra) , ion , crystallography , enantiomer , chemistry , stereochemistry , materials science , catalysis , organic chemistry , mechanical engineering , engineering
A gigantic polyoxometalate … … [Ce 20 Ge 10 W 100 O 376 (OH) 4 (H 2 O) 30 ] 56− ( 1 ) was obtained in a classic one‐pot synthesis from Ce III ions and the trilacunary precursor [α‐GeW 9 O 34 ] 10− in water, as described by U. Kortz and co‐workers in their Communication on page 6192 ff. The cover picture shows a possible mechanism of formation by stepwise self‐assembly, beginning with the formation of Ce 2 GeW 10 Keggin units, followed by arrangement of five such units into chiral, enantiomeric {Ce 2 GeW 10 } 5 species, and then dimerization of the R and S forms to give 1 .