Simon J. Brooks, Peter R. Edwards, Philip A. Gale and Mark E. Light
New J. Chem., 2006,30, 65-70
DOI:
10.1039/B511963D,
Paper
Simple bis-urea compounds based on ortho-phenylenediamine function as excellent receptors for carboxylate anions in DMSO-d6–0.5% water solution. By varying the functional groups in these compounds, the binding affinity of carboxylate anions can be modulated. Solid-state studies illustrate the cleft-like arrangement of the DDDD hydrogen bond array in the carboxylate complexes of these compounds.
