NOVEL SPIRO SUBSTITUTED CYCLOTRIPHOSPHAZENES INCORPORATING ETHYLENEDINITRAMINE UNITS

A new initiative directed toward understanding the chemistry, synthesi s, and properties of non or low carbon-based energetic compositions wa s undertaken. Initial synthesis work focused on reactions of hexachlor ocyclotriphosphazene 1, with ethylenediamino and azido functional grou ps. The reaction of 1 with ethylenediamine, N,N'-dinitroethylenediamin e, and N,N '-bis(trimethylsilyl)ethylenediamine yielded novel bis- and tris-spiro(ethylenediamino)cyclotriphosphazenes. Subsequent nitration with either nitronium tetrafluoroborate or nitric acid (100%) acetic anhydride gave various mono-, bis- and (N,N'-dinitroethylenediamino)cy clotriphosphazenes.