Phosphorus-31 NMR Spectroscopy - Applications in Chemistry

Applications in Chemistry

31P-NMR spectroscopy is useful to assay purity and to assign structures of phosphorus-containing compounds because these signals are well resolved and often occur at characteristic frequencies. Chemical shifts and coupling constants span a large range but sometimes are not readily predictable. The Gutmann-Beckett method uses Et₃PO in conjunction with 31P NMR-spectroscopy to assess the Lewis acidity of molecular species.