Helix-Like Receptors for Perrhenate Recognition Forming Hydrogen Bonds with All Four Oxygen Atoms

Language
en
Document Type
Article
Issue Date
2021-05-05
First published
2021-04-26
Issue Year
2021
Authors
Morozov, Boris S.
Ravi, Anil
Oshchepkov, Aleksandr S.
Rüffer, Tobias
Lang, Heinrich
Kataev, Evgeny A.
Editor
Publisher
MDPI
Abstract

Supramolecular recognition of perrhenate is a challenging task due to therelatively large size and low charge density of this anion. In this work, we design and synthesize a family of helix-like synthetic receptors that can bind perrhenate by forming hydrogen bonds with all four oxygen atoms of the anion. Among the investigated rigid helix-forming subunit derived from 1,1′-ferrocenedicarboxylic acid, 1,3-phenylenediacetic acid and 2,2′-(ethyne-1,2-diyl)dibenzoic acid, the latter one shows the best selectivity for perrhenate recognition. However, the receptor based on 1,1′-ferrocenedicarboxylic acid demonstrates selectivity to bind chloride in a 1:2 fashion. The properties of the receptors are investigated in the acetonitrile solution by using NMR, UV–Vis, and in the solid state by single crystal X-ray analysis.

Journal Title
Chemosensors
Volume
9
Issue
5
Citation

Chemosensors 9.5 (2021): 93. https://www.mdpi.com/2227-9040/9/5/93

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