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Asymmetric Tetraprotonation of γ‐[(SiO 4 )W 10 O 32 ] 8− Triggers a Catalytic Epoxidation Reaction: Perspectives in the Assignment of the Active Catalyst
Author(s) -
Sartorel Andrea,
Carraro Mauro,
Bagno Alessandro,
Scorrano Gianfranco,
Bonchio Marcella
Publication year - 2007
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.200605120
Subject(s) - lacunary function , catalysis , polyoxometalate , regioselectivity , molecule , chemistry , reaction mechanism , chemical kinetics , kinetics , physics , organic chemistry , mathematics , pure mathematics , quantum mechanics
Water in the lagoon : A fast catalytic epoxidation of both terminal and internal double bonds was promoted by the regioselective tetraprotonation of the polyoxometalate γ‐[(SiO 4 )W 10 O 32 ] 8− (see picture), which leads to the localization of two water molecules on the reactive lacunary site. This mechanism was supported by evidence from kinetic, spectroscopic, and computational studies.