Issue 2, 2023

Structural characterization and solvent vapor sorption of two solvent-dependent Zn(ii) supramolecular architectures based on a flexible tripodal thioether-based pyridyl ligand and a dicarboxylate-based ligand

Abstract

Two solvent-dependent 3D supramolecular architectures constructed by a doubly-interpenetrating layered 2D MOF of [Zn3(L1)2(L2)(Cl)4(CH3OH)2]·6CH3OH (1) and triply-interpenetrating 3D MOF of [Zn(L1)(L2)(H2O)]·2C2H5OH (2) (L1 = 1,3,5-tris(4-pyridylsulfanylmethyl)-2,4,6-trimethylbenzene and L2 = dianion of 2,5-dihydroxyterephthalic acid), were synthesized and structurally characterized using single-crystal X-ray diffraction method. In compound 1, there were two crystallographically independent Zn(II) ions with a distorted octahedral and a distorted tetrahedral geometries, respectively. L1 acted as a bridge ligand with a tris-monodentate coordination connecting two Zn(II) (Zn(1) and Zn(2)) ions to form a one-dimensional (1D) polymeric chain, genertating a [Zn2L12] metallocycle as the building unit. Adjacent chains were then connected via the bridge of Zn(II) and L2 with a bis-monodentate coordination mode to form a two-dimensional (2D) layered MOF. Two 2D layers mutually interpenetrated via the L2 ligands penetrating into the [Zn2L12] metallocycle rings to genetrate a 2D doubly-interpenetrating network. In 2, the Zn(II) ion was six-coordinate bonded to three nitrogen donors of three L1 and three oxygen donors of two crystallographically independent L2 and one H2O molecule to form a distorted octahedral grometry. L1 acted as a bridge ligand with a tris-monodentate coordination connecting Zn(II) ions to form a 2D honeycomb-like layered framework. Adjacent 2D layers were mutually connected via the bridge of Zn(II) and L2 with a bis-monodentate coordination mode to form a three-dimensional (3D) MOF. The much larger intraframework spaces were then occupied by the other two 3D crystallographically identical networks but independent to form a 3D triply interpenetrating supramolecular architecture. The reversible solvent vapor ad-/desorption behaviors were investigated by cyclic de-/rehydration TG analysis and the water vapor ad-/desorption isotherms of 1 and 2 were studied in detail.

Graphical abstract: Structural characterization and solvent vapor sorption of two solvent-dependent Zn(ii) supramolecular architectures based on a flexible tripodal thioether-based pyridyl ligand and a dicarboxylate-based ligand

Supplementary files

Article information

Article type
Paper
Submitted
20 Oct 2022
Accepted
22 Nov 2022
First published
22 Nov 2022

CrystEngComm, 2023,25, 290-298

Structural characterization and solvent vapor sorption of two solvent-dependent Zn(II) supramolecular architectures based on a flexible tripodal thioether-based pyridyl ligand and a dicarboxylate-based ligand

C. Wang, Y. Chung, C. Liu, G. Lee, S. Chien, B. Chen and Y. Chuang, CrystEngComm, 2023, 25, 290 DOI: 10.1039/D2CE01440H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements