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. 2021 Jan 11;60(2):650-654.
doi: 10.1002/anie.202010436. Epub 2020 Nov 3.

Pentacyclic Nano-Trefoil

Affiliations

Pentacyclic Nano-Trefoil

Huiyeong Ju et al. Angew Chem Int Ed Engl. .

Abstract

Tetra-armed cyclen (1) bearing two 4-(4'-pyridyl)benzyl and two 3,5-difluorobenzyl groups and its Ag+ complexes were prepared and structurally characterized. The complexes formed between 1 and Ag+ undergoes a reversible structural transformation between a 2:2 dimeric complex and a 3:5 pentacyclic trefoil complex with changes in the Ag+ /1 molar ratio. It was also revealed that the 3:5 trefoil complex could encapsulate benzene and [D6 ]benzene selectively in solid-state. The benzene-included structures are stabilized by C-H⋅⋅⋅F-C interactions between the benzene molecule and the ligand molecule.

Keywords: argentivorous molecules; cyclen; cyclic dimers; pentacyclic trefoil; reversible structural transformation; silver(I) complexes.

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