NDLI: Tritopic Bis-Urea Receptors for Anion and Ion-Pair Recognition.

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Tritopic Bis-Urea Receptors for Anion and Ion-Pair Recognition.

Content Provider	Europe PMC
Author	Gomez-Vega, Jancarlo Soto-Cruz, Jesús Martín Juárez-Sánchez, Octavio Santacruz-Ortega, Hisila Gálvez-Ruiz, Juan Carlos Corona-Martínez, David Octavio Pérez-González, Refugio Ochoa Lara, Karen
Copyright Year	2022
Abstract	This work reportson the synthesis and characterization of threetritopic receptors and their binding properties toward various anions,as their tetrabutylammonium salts, and three alkali metal–acetatesalts by UV–vis, fluorescence, 1H, 7Li, 23Na, and 39K NMR in MeCN/dimethyl sulfoxide (DMSO)9:1 (v/v). Molecular recognition studies showed that the receptorshave good affinity for oxyanions. Furthermore, these compounds arecapable of ion-pair recognition of the alkali metal–acetatesalts studied through a cooperative mechanism. Additionally, molecularmodeling at the density functional theory (DFT) level of some lithiumand sodium acetate complexes illustrates the ion-pair binding capacityof receptors. The anion is recognized through strong hydrogen bondsof the NH– groups from the two urea sites, while the cationinteracts with the oxygen atoms of the polyether spacer. This workdemonstrates that these compounds are good receptors for anions andion pairs.
Journal	ACS Omega
Volume Number	7
PubMed Central reference number	PMC9260929
Issue Number	26
PubMed reference number	35811876
e-ISSN	24701343
DOI	10.1021/acsomega.2c00935
Language	English
Publisher	American Chemical Society
Publisher Date	2022-06-22
Access Restriction	Open
Rights License	Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). © 2022 The Authors. Published by American Chemical Society
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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