Cyclotriphosphazenes substituted non-geminally by fluorine and either chlorine or bromine have been prepared. The compounds, with general formula P3N3F,X6-, where X = CI or Br and n = 2-4, result from reactions under pressure between either hydrogen chloride or bromide and dimethylaminofluorocyclotriphosphazenes. The more volatile chlorofluoro-compounds can be prepared at atmospheric pressure by passing hydrogen chloride through a refluxing solution of the aminofluoride in nitrobenzene. In all cases, pairs of cis-trans-isomers are obtained.Structures have been assigned to the products on the basis of lgF n.m.r. spectra.REACTIONS between various anionic fluorinating agents and both hexachlorocyclotriphosphazene and octachlorocyclotetraphosphazene give, in addition to completely fluorinated products, series of mixed chlorofluoro-derivatives P,N,F,Cl, -, and P4N,F,C1, -These products are exclusively the geminal isomers, i.e., those in which chlorine atoms at the same phosphorus atom are substituted. The geminal substitution scheme also seems to be followed in fluorination of the he~abromide.~ The non-geminally substituted mixed halides must therefore be obtained by an indirect route.We have shown that non-geminal trimeric and tetrameric compounds can be obtained from the reaction
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.