Anion receptors with nitrone C-H hydrogen bond donors

Xuxian He; Richard R Thompson; Sarah A Clawson; Frank R Fronczek; Semin Lee

doi:10.1039/d3cc00371j

Anion receptors with nitrone C-H hydrogen bond donors

Chem Commun (Camb). 2023 Apr 13;59(31):4624-4627. doi: 10.1039/d3cc00371j.

Authors

Xuxian He¹, Richard R Thompson², Sarah A Clawson¹, Frank R Fronczek¹, Semin Lee¹

Affiliations

¹ Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana, 70810, USA. seminlee@lsu.edu.
² Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA.

PMID: 36987751
DOI: 10.1039/d3cc00371j

Abstract

We report the use of nitrone C-H groups as hydrogen bond donors for binding anions. Acyclic anion receptors with two nitrone moieties were synthesized by condensation reactions between aryl-aldehydes and m-phenylenedihydroxylamines. The solid-state structure of dinitrones revealed C-H⋯O hydrogen bonds. Anion binding properties were investigated using NMR titration with halide and phosphate salts.