The F-19 NMR spectra of 26 simple fluorinated carboxylic acids were measured in aqueous solutions of pH 0.3-10.0. Analysis of the fluorine chemical shift dependence on pH allowed the determination of ionization constants from the titration curves; the values agreed with known pK(a) values. The acidity of a fluorinated bilirubin precursor was established using this method. Copyright (C) 1999 John Wiley & Sons, Ltd.
The F-19 NMR spectra of 26 simple fluorinated carboxylic acids were measured in aqueous solutions of pH 0.3-10.0. Analysis of the fluorine chemical shift dependence on pH allowed the determination of ionization constants from the titration curves; the values agreed with known pK(a) values. The acidity of a fluorinated bilirubin precursor was established using this method. Copyright (C) 1999 John Wiley & Sons, Ltd.
The F-19 NMR spectra of 26 simple fluorinated carboxylic acids were measured in aqueous solutions of pH 0.3-10.0. Analysis of the fluorine chemical shift dependence on pH allowed the determination of ionization constants from the titration curves; the values agreed with known pK(a) values. The acidity of a fluorinated bilirubin precursor was established using this method. Copyright (C) 1999 John Wiley & Sons, Ltd.