Linear Correlation between the P-31 NMR Shifts of Cyclic Phosphines and the O-17 Shifts of the Corresponding Phosphine Oxides

摘要

The O-17 NMR shifts for phosphine oxides based on six different heterocyclic ring systems, representing 16 data points, were plotted against the P-31 shifts of the corresponding phosphines. A linear correlation with R=0.96 resulted. Each heterocyclic system occupied its own region of the correlation line, with no overlap. There was no correlation between the O-17 NMR shifts and the P-31 shifts of the phosphine oxides. Keywords: Phosphorus NMR, Oxygen nmr, Phosphine oxides, Phosphines, Aminophosphines. Reprints. (mjm)