Peer-Reviewed Journal Details
Mandatory Fields
Collins, G;Schmidt, M;Dwyer, CO;Holmes, JD;McGlacken, GP
2014
April
Angewandte Chemie International Edition
The Origin of Shape Sensitivity in Palladium-Catalyzed Suzuki-Miyaura Cross Coupling Reactions
Validated
WOS: 101 ()
Optional Fields
NANOPARTICLE SHAPE PD NANOPARTICLES LEACHING MECHANISM SURFACE HECK NANOCRYSTALS CARBON WATER ACID SIZE
53
4142
4145
The shape sensitivity of Pd catalysts in Suzuki-Miyaura coupling reactions is studied using nanocrystals enclosed by well-defined surface facets. The catalytic performance of Pd nanocrystals with cubic, cuboctahedral and octahedral morphologies are compared. Superior catalytic reactivity is observed for Pd NCs with {100} surface facets compared to {111} facets. The origin of the enhanced reactivity associated with a cubic morphology is related to the leaching susceptibility of the nanocrystals. Molecular oxygen plays a key role in facilitating the leaching of Pd atoms from the surface of the nanocrystals. The interaction of O-2 with Pd is itself facet-dependent, which in turn gives rise to more efficient leaching from {100} facets, compared to {111} facets under the reaction conditions.
WEINHEIM
1433-7851
10.1002/anie.201400483
Grant Details