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Tilt the Molecule and Change the Chemistry: Mechanism of S‐Promoted Chemoselective Catalytic Hydrogenation of Crotonaldehyde on Cu(111)
Author(s) -
Chiu May E.,
Watson David J.,
Kyriakou Georgios,
Tikhov Mintcho S.,
Lambert Richard M.
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.200603408
Subject(s) - crotonaldehyde , chemistry , photochemistry , catalysis , molecule , selectivity , sulfur , x ray photoelectron spectroscopy , organic chemistry , chemical engineering , engineering
Tilt it a little : X‐ray absorption spectroscopy and photoemission were used to elucidate the mechanism of promoter action in the Cu‐catalyzed chemoselective hydrogenation of crotonaldehyde. Sulfur adatoms electronically perturb the CO bond and tilt the CC bond away from the surface, thus activating the former and rendering the latter inert to hydrogenation. Quantitative conversion of the reactant with 100 % selectivity may be achieved.