P4N4F7O−—the isoelectronic counterpart of P4N4F8

Fluoride ion transfer and stabilisation of reactive ions

“…This leads to selective exchanges at the heterocycles, in the reaction of TAS þ P 4 N 4 F 9 À and Me 2 NSiMe 3 mono-substitution is observed [81]. From P 4 N 4 F 9 À and C 3 N 3 F 4 À the anions P 4 N 4 F 8 O À [94] (isoelectronic with P 4 N 4 F 8 ) and C 3 N 3 F 6 O À (isoelectronic with C 3 N 3 F 3 ) [76] were isolated as TAS salts and characterised by X-ray crystallography (Scheme 19). The reaction of TAS þ C 3 N 3 F 4 À with Me 3 SiCF 3 is more complex, TAS þ C 3 N 3 F 2 (CF 3 ) 2 À , TAS þ C 3 N 3 F(CF 3 ) 3 À and TAS þ C 3 N 3 (CF 3 ) 4 À were identified by NMR spectroscopy (Scheme 20).…”

Phosphazene-Based Ionic Liquids: Synthesis, Temperature-Dependent Viscosity, and Effect as Additives in Water Lubrication of Silicon Nitride Ceramics

“…There are very few stable ionic phosphazene compounds in the literature because such compounds are very reactive and often undergo thermally induced decomposition . While the synthesis of 3 , a white solid, was reported in the literature, we obtained the 13 C NMR spectral data, which consist of signals at 66.7 (dd, J = 3 Hz, J = 2 Hz), 121.9, 145.8 (dd, J = 5 Hz, J = 3 Hz), and 150.5 ppm.…”

“…On the basis of elemental analysis, they were isolated as hydrate salts. They were characterized by their NMR spectral data through comparison with the spectra of closely related compounds. − The compounds appeared to be very hygroscopic and were dried under dynamic vacuum (∼0.8 Torr) at 40 °C for several days. However, upon exposure to the laboratory environment and especially on shipment and handling by our chemical analysts in China, it was impossible to maintain them in an anhydrous state.…”

“…N 3 P 3 (OCH 2 pyr) 6 (3). The synthesis of 3 and its NMR ( 1 H and 31 P) spectra as well as IR data and elemental analysis were described elsewhere . However, because of P−C couplings observed in the 13 C NMR spectrum, the following previously unreported data are given.…”