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Issue 20, 2020
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Cu2O polyhedra for aryl alkyne homocoupling reactions

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Cu2O cubes, octahedra and rhombic dodecahedra were employed to catalyze homocoupling reactions of aryl alkynes. The X-ray diffraction (XRD) patterns of the Cu2O crystals show slight peak shifts for the different particle shapes, which may be a manifestation of bond-level deviations within the thin surface layer as predicted by density functional theory (DFT) calculations. Infrared spectral characterization indicates acetylenic carbons binding to copper atoms of the Cu2O crystals, and this may be the intermediate state in the coupling reaction. Cu2O rhombic dodecahedra exhibit the best catalytic performance toward homocoupling of phenylacetylene, and they also catalyze homocoupling of a variety of substituted aryl alkynes, showing the advantage of Cu2O facet control to driving important organic coupling reactions.

Graphical abstract: Cu2O polyhedra for aryl alkyne homocoupling reactions

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Article information

28 Jun 2020
10 Aug 2020
First published
10 Aug 2020

Catal. Sci. Technol., 2020,10, 6948-6952
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Cu2O polyhedra for aryl alkyne homocoupling reactions

M. Madasu and M. H. Huang, Catal. Sci. Technol., 2020, 10, 6948
DOI: 10.1039/D0CY01283A

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