Isolation of donor-stabilized N-silylphosphoranimine cations and the discovery of an ambient temperature route to Poly(alkyl/aryl)phosphazenes

This account describes the formation of nitrogen and phosphorus donor-stabilized phosphoranimine cations from N-silylphosphoranimines. A novel phosphine-mediated dehalogenation reaction is also described, as well as the discovery of an ambient temperature route to poly(alkyl/aryl)phosphazenes.

The N-silylphosphoranimine Cl3PNSiMe3 reacts with strong pyridine and phosphine bases to yield N-donor-stabilized cations and N-phosphinophosphoranimines, respectively. The later reaction occurs via a phosphine mediated dehalogenation mechanism. Reactions involving phosphines and phosphites with the phosphoranimine BrR2PNSiMe3, respectively, yields P-donor stabilized cations and poly(alkyl/aryl)phosphazenes at ambient temperature.Figure optionsDownload as PowerPoint slide