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Metal‐Catalyzed Oxidations, 4 . The Reaction of Molybdenumperoxo Complexes with Brønsted and Lewis Acids
Author(s) -
Thiel Werner R.
Publication year - 1996
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19961290516
Subject(s) - chemistry , catalysis , lewis acids and bases , ligand (biochemistry) , denticity , olefin fiber , brønsted–lowry acid–base theory , metal , medicinal chemistry , proton , transition metal , stereochemistry , organic chemistry , biochemistry , physics , receptor , quantum mechanics
NMR studies of the reaction of complexes of the type (L‐L)MoO(O 2 ) 2 (L – L= bidentate ligand) with strong Brønsted and Lewis acids prove that protons are transferred preferentially to an η 2 ‐peroxo and not to the oxo ligand. This behavior in proton transfer reactions is one critical point of the catalytic activity of such complexes in olefin epoxidation. EH calculations on the model complex (NH 3 ) 2 MoO(O 2 ) 2 support the spectroscopic investigations.