Abstract Ph 2 P-PF 2 Ph 2 has been identified by means 19 F-and 31 P-NMR spectroscopy as an intermediate product of the disproportionation of Ph 2 PF. The disproportionation is catalyzed by acids. The reaction mechanism is discussed. PhPF 2 disproportionates faster in solution in acetonitrile than neat, forming (PhP) 6, instead of (PhP) 5.
