Face-Directed Tetrahedral Organic Cage Anchored Palladium Nanoparticles for Selective Homocoupling Reactions

Bhandari, P and Mondal, B and Howlader, P and Mukherjee, PS (2022) Face-Directed Tetrahedral Organic Cage Anchored Palladium Nanoparticles for Selective Homocoupling Reactions. In: European Journal of Inorganic Chemistry, 2022 (7).

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Abstract

Numerous metalla-supramolecular architectures have been designed using coordination-driven self-assembly, while the number of analogous organic architectures is still very limited. In this regard, mainly di-, tri- and a few tetra-aldehydes have been exploited as precursors in combination with appropriate di-/tri-amines to obtain the desired structures with limited complexities. We report here facile synthesis of two face-directed tetrahedral organic cages (TC-R and TC-S) that were formed by [4+12] imine condensation of a new hexa-aldehyde precursor with two enantiomers of 1,2-diaminocyclohexane separately (CA-R and CA-S). The covalent imine cages are very large with an intrinsic porous cavity of ∼1250 Å3 and the faces of the cages consist of aromatic aldehyde units whereas each corner is occupied by three semi-flexible diamine moieties. Palladium (PdNPs) nanoparticles (3.5±0.3 nm) were synthesized employing the cage TC-R as a solid support via double-solvent approach. Furthermore, the cage hosted PdNPs [Pd(0)@TC-R-A] exhibited efficient catalytic activity for selective homocoupling of aryl- and hetero-aryl halides with high thermal stability and reusability.

Item Type:	Journal Article
Publication:	European Journal of Inorganic Chemistry
Publisher:	John Wiley and Sons Inc
Additional Information:	The copyright for this article belongs to the John Wiley and Sons Inc.
Keywords:	Cage compounds; Enantiomeric cages; Heterogeneous catalysis; Palladium; Self-assembly
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	13 Feb 2022 08:47
Last Modified:	01 Jul 2022 05:52
URI:	https://eprints.iisc.ac.in/id/eprint/71386

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