Peculiarities of the nitration of secondary polynitroalkanes

In the interaction of salts of 1,1,1,3,5,5,5-heptanitro- or 1,5-difluoro-1,1,3,5,5-pentanitropentanes with nitrating systems based no HNO/sub 3/, 1,1,1,3,3,5,5,5-octanitro- or 1,5-difluoro-1,1,3,3,5,5-hexanitropentanes, 1,1,1,5,5,5-hexanitro- or 1,5-difluoro-1,1,5,5-tetranitropentan-3-ones, the O-bis(2,2,2-trinitroethyl)nitromethyl ether of bis(2',2',2'-trinitroethyl)carboxime or the O-bis(2-fluoro-2,2-dinitroethyl)nitromethyl ether of bis(2'-fluoro-2',2'-dinitroethyl)carboxime are formed. The ratio of the reaction products depends on the composition of the nitrating system. The data obtained permit them to consider that the nitrating reagent is a nonionized form of HONO/sub 2/ or AcONO/sub 2/.