Issue 35, 2021

Trimacrocyclic hexasubstituted benzene linked by labile octahedral [X(CHCl3)6] clusters

Abstract

Crystalline supramolecular architectures mediated by cations, anions, ion pairs or neutral guest species are well established. However, the robust crystallization of a well-designed receptor mediated by labile anionic solvate clusters remains unexplored. Herein, we describe the synthesis and crystalline behaviors of a trimacrocyclic hexasubstituted benzene 2 in the presence of guanidium halide salts and chloroform. Halide hexasolvate clusters, viz. [Cl(CHCl3)6], [Br(CHCl3)6], and [I(CHCl3)6], were found to be critical to the crystallization process, as suggested by the single-crystal structures, X-ray powder diffraction (XRPD), thermogravimetric analysis (TGA), scanning electron microscopy with energy dispersive spectroscopy (SEM-EDS), and NMR spectroscopy. This study demonstrates the hitherto unexpected role that labile ionic solvate clusters can play in stabilizing supramolecular architectures.

Graphical abstract: Trimacrocyclic hexasubstituted benzene linked by labile octahedral [X(CHCl3)6]− clusters

Supplementary files

Article information

Article type
Edge Article
Submitted
08 Jūl. 2021
Accepted
11 Aug. 2021
First published
12 Aug. 2021
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2021,12, 11647-11651

Trimacrocyclic hexasubstituted benzene linked by labile octahedral [X(CHCl3)6] clusters

Z. Lai, A. Li, S. Peng, J. L. Sessler and Q. He, Chem. Sci., 2021, 12, 11647 DOI: 10.1039/D1SC03713G

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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