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Lanthanide Complexes of the Monovacant Dawson Polyoxotungstate [α 1 ‐P 2 W 17 O 61 ] 10− as Selective and Recoverable Lewis Acid Catalysts
Author(s) -
Boglio Cécile,
Lemière Gilles,
Hasenknopf Bernold,
Thorimbert Serge,
Lacôte Emmanuel,
Malacria Max
Publication year - 2006
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.200600364
Subject(s) - lanthanide , polyoxometalate , lacunary function , catalysis , chemistry , lewis acids and bases , trimethylsilyl , inorganic chemistry , crystallography , medicinal chemistry , ion , organic chemistry , mathematics , pure mathematics
Catalytic cornerstone : Lanthanide( III ) complexes of a lacunary Dawson‐type polyoxometalate catalyze Lewis acid mediated reactions (see figure, TMS=trimethylsilyl). The compounds (NBu 4 ) 5 H 2 [α 1 ‐Ln(H 2 O) 4 P 2 W 17 O 61 ] (Ln=Yb, Sm, Eu, La) are much more chemoselective than the lanthanide triflates. Furthermore, the polyoxotungstic framework can play a role, presumably through H‐bonding to the substrates.