Journal
DALTON TRANSACTIONS
Volume 47, Issue 26, Pages 8755-8763Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8dt01288a
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Funding
- Natural Science Foundation of China [21671139, 21201123]
- Natural Science Foundation of Liaoning Province [20170540713]
- Distinguished Professor Project of Liaoning province [2013204]
- Educational Bureau of Liaoning Province for the Fundamental Research of Key Lab [LZ2014028]
- Romanian Academy, Institute of Organic Chemistry C. D. Nenitescu, Bucharest, Romania
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An array of heterobimetallic Pd/Ln MOFs (1-4) with Sm, Eu, Tb, Dy as preferred metal nodes and 1,1-di(p-carboxybenzyl)-2,2-diimidazole (H2L) as a fairly suitable bifunctional organic linker have been synthesized, fully characterized and tested as catalysts in cross-coupling reactions. These robust MOFs, ensuring a uniform distribution of Pd, showed excellent stability in air and high catalytic activity in Suzuki-Miyaura reactions conducted in neat water, neat ethanol as well as water-ethanol mixture. Depending on the solvent, complex 1 could be effectively recycled 4-8 times without significant loss of catalytic activity. Importantly, this complex was found to be pH responsive in a reversible way, enabling convenient recovery from acidic aqueous solutions, indicating good recyclability as well as environment-friendly separation of the metal residues after the reaction.
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