SOME PREDICTIONS IN THE FIELD OF THE PHYSICAL THERMAL-STABILITY OF NITRAMINES

Eight linear and seven cyclic nitramines predominantly with methylenen itramine grouping were studied by means of the differential scanning c alorimetry (DSC). For eleven of them the characteristics of fusion wer e specified. Linear relationships were found between the onset or peak temperatures of melting of these compounds and the melting points of their aliphatic structural analogues (i.e. homomorphs). A similar rela tionship between the corresponding heats of fusion Delta H-m,H-tr was specified. On the basis of these facts the melting points (in K) and t he Delta H-m,H-tr values (in kJ mol(-1)) were predicted for N-nitromet hyleneimine, DIGEN (368.5-371.5 and 23.45), 2,4-dinitro-2,4-diazacyclo butane, TETROGEN (433.8-436.1 and 26.33), 1,3,5,7-tetranitro-1,3,5,7-t etraazacyclooctane, OCTOGEN (463.4-465.2 and 32.10), ,3,5,7,9-pentanit ro-1,3,5,7,9-pentaazacyclodecane, DECAGEN (600.3 and 34.93) and trans- 1,4,5,8-tetranitro-1,4,5,8-tetraazadecaline, TNTAD (555.6-556.1 and 46 .40). (C) 1997 Elsevier Science B.V.