Probing Through-Space Polar−π Interactions in 2,6-Diarylphenols
2019
Bosmans, Vera | Poater, Jordi | Hammink, Roel | Tinnemans, Paul | Bickelhaupt, F Matthias | Mecinović, Jasmin
Although it is well established that the acidity of phenol can be fine-tuned with substituents on its aromatic ring via through-bond effects, the role of through-space effects on the acidity of phenols is presently poorly understood. Here, we present integrated experimental and computational studies on substituted 2,6-diarylphenols that demonstrate the essential contribution from through-space OH−π interactions and O––π interactions in the observed trends in proton affinities and acidities of 2,6-diarylphenols.
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