Acid-Tolerant Sulfate Tetrahedral Cages from Anion-Coordination-Driven Assembly

Wenyao Zhang; Yang Feng; Boyang Li; Dong Yang; Lekai Hou; Wei Zhao; Xiao Juan Yang; Biao Wu

doi:10.1002/chem.202103671

Acid-Tolerant Sulfate Tetrahedral Cages from Anion-Coordination-Driven Assembly

Wenyao Zhang, Yang Feng, Boyang Li, Dong Yang, Lekai Hou, Wei Zhao, Xiao Juan Yang, Biao Wu^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Northwest University China

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Supramolecular cages have been constructed by anion-coordination-driven assembly (ACDA) in recent years and have shown unique host-guest interactions. However, most of the reported cages are made of the phosphate ion (PO₄³⁻); other anions have rarely been explored. Here we show for the first time that the sulfate ion (SO₄²⁻) is also able to form the A₄L₄ tetrahedral motif with tris-bis(urea) ligands, but this is dependent on the stoichiometry of the sulfate ion (in solution). Notably, the sulfate cages display enhanced resistance for both Brønsted (pH as low as 4.3 in acetone containing 15 % water) and Lewis acids (metal complexes) compared to the corresponding phosphate cages, and thus could find applications where an acidic (proton or metals) environment is required.

Original language	English
Article number	e202103671
Journal	Chemistry - A European Journal
Volume	28
Issue number	3
DOIs	https://doi.org/10.1002/chem.202103671
Publication status	Published - 13 Jan 2022

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title = "Acid-Tolerant Sulfate Tetrahedral Cages from Anion-Coordination-Driven Assembly",

abstract = "Supramolecular cages have been constructed by anion-coordination-driven assembly (ACDA) in recent years and have shown unique host-guest interactions. However, most of the reported cages are made of the phosphate ion (PO43−); other anions have rarely been explored. Here we show for the first time that the sulfate ion (SO42−) is also able to form the A4L4 tetrahedral motif with tris-bis(urea) ligands, but this is dependent on the stoichiometry of the sulfate ion (in solution). Notably, the sulfate cages display enhanced resistance for both Br{\o}nsted (pH as low as 4.3 in acetone containing 15 % water) and Lewis acids (metal complexes) compared to the corresponding phosphate cages, and thus could find applications where an acidic (proton or metals) environment is required.",

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AU - Zhang, Wenyao

AU - Feng, Yang

AU - Li, Boyang

AU - Yang, Dong

AU - Hou, Lekai

AU - Zhao, Wei

AU - Yang, Xiao Juan

AU - Wu, Biao

PY - 2022/1/13

Y1 - 2022/1/13

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AB - Supramolecular cages have been constructed by anion-coordination-driven assembly (ACDA) in recent years and have shown unique host-guest interactions. However, most of the reported cages are made of the phosphate ion (PO43−); other anions have rarely been explored. Here we show for the first time that the sulfate ion (SO42−) is also able to form the A4L4 tetrahedral motif with tris-bis(urea) ligands, but this is dependent on the stoichiometry of the sulfate ion (in solution). Notably, the sulfate cages display enhanced resistance for both Brønsted (pH as low as 4.3 in acetone containing 15 % water) and Lewis acids (metal complexes) compared to the corresponding phosphate cages, and thus could find applications where an acidic (proton or metals) environment is required.

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Acid-Tolerant Sulfate Tetrahedral Cages from Anion-Coordination-Driven Assembly

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