Preparation and nuclear magnetic resonance spectra of the chloro-monofluorocyclophosphazenes

Abstract

The cyclic chlorophosphazenes N_nP_nCl_2n(n= 3–6) are fluorinated by a mixture of SbF₃ and SbCl₅ to give either the monofluoro-compound or, depending on the reagent ratio, mixtures of non-geminal chloride fluorides. The n.m.r, parameters of the monofluorides show similar ring-size effects to the monochlorofluorocyclophosphazenes.