31P NMR Chemical Shifts: PAr3 (0-(-55) ppm)
| Compound | Chemical Shift | Reference | |
| PPh3 | -5 | Curr Org Chem, 2007, 11, 17-31 | |
| PMes3 | -36 | Curr Org Chem, 2007, 11, 17-31 | |
| P(2,4,6-Et3C6H2)3 | -41 | Curr Org Chem, 2007, 11, 17-31 | |
| PTripp3 | -52 | Curr Org Chem, 2007, 11, 17-31 | |