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Type: Journal article
Title: Hierarchical assembly of an interlocked M₈L₁₆ container
Other Titles: Hierarchical assembly of an interlocked M8L16 container
Author: Bloch, W.
Holstein, J.
Dittrich, B.
Hiller, W.
Clever, G.
Citation: Angewandte Chemie International Edition, 2018; 57(19):5534-5538
Publisher: Wiley
Issue Date: 2018
ISSN: 1433-7851
Statement of
Witold M. Bloch, Julian J. Holstein, Birger Dittrich, Wolf Hiller, and Guido H. Clever
Abstract: The self-assembly of eight Pd(II) cations and sixteen phenanthrene-derived bridging ligands with 60° bite angles yielded a novel M₈L₁₆ metallosupramolecular architecture composed of two interlocked D₄h-symmetric barrel-shaped containers. Mass spectrometry, NMR spectroscopy, and X-ray analysis revealed this self-assembled structure to be a very large "Hopf link" catenane featuring channel-like cavities, which are occupied by NO₃⁻ anions. The importance of the anions as catenation templates became imminent when we observed the nitrate-triggered structural rearrangement of a mixture of M₃L₆ and M₄L₈ assemblies formed in the presence of BF₄⁻ anions into the same interlocked molecule. Furthermore, the densely packed structure of the M₈L₁₆ catenane was exploited in the preparation of a hexyloxy-functionalized analogue, which further self-assembled into vesicle-like aggregates in a reversible manner.
Keywords: Catenanes; interlocked structures; self-assembly; structural transformations; supramolecular chemistry
Rights: © 2018 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
RMID: 0030081405
DOI: 10.1002/anie.201800490
Appears in Collections:Chemistry publications

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