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A 19F Solvatomagnetic Comparison Method for the Determination of the α1 Scale of Solvent Hydrogen‐Bond Donation and Its Application to Deep Eutectic Solvents

Year: 2024
Type: article
Abstract: ABSTRACT We develop a nonsolvatochromic comparison method for the determination of the α1 scale of solvent hydrogen‐bond acidity by means of 19F NMR spectrometry. We compare the 19F chemical shifts of 4‐fluoro‐2‐methylpyridine (as a sensitive hydrogen‐bond acceptor probe) and of 4‐fluoronitrobenzene (as a chemically similar but less basic reference probe). This so‐called 19F solvatomagnetic comparison method yields the hydrogen‐bonding contribution to δ (19F)(4‐fluoro‐2‐methylpyridine) that is well correlated to α1 values obtained from the solvatochromism of Reichardt's betaine dye. Therefore, this solvatomagnetic comparison method is applied to determine the α1 values of 13 choline chloride–based deep eutectic solvents.
DOI: 10.1002/poc.4665
Institutions: Centre National de la Recherche Scientifique, Chimie et Interdisciplinarité, Synthèse, Analyse, Modélisation, Université de Nantes, Nantes Université, Laboratoire COBRA, Université de Rouen Normandie, Institut National des Sciences Appliquées Rouen Normandie, Polymères, Biopolymères, Surfaces
Language: English
Subfield: Catalysis
Open Access status: hybrid
Estimated APC paid: $3,740
Funders: Indian National Science Academy, Agence Nationale de la Recherche, Centre National de la Recherche Scientifique, Université de Rouen, Institut Carnot Santé Animale, Région Normandie, European Regional Development Fund, XL-Chem Graduate School of Research
Awards: G1576599217, G2048057746, G2900821844, G4356253665, G4656594441, G5976147578, Synthèse Organique : des molécules au vivant, G799363536
OpenAlex ID: W4403489601
FWCI: 0.131
Cites: 39
Cited by: 2
Related to: 10