Two interesting derivatives of 1-amino-1-hydrazino-2,2-dinitroethylene (AHDNE): synthesis and thermal properties

Abstract

Two new interesting compounds, ethanedial-1,2-bis-(2-(1-amino-2,2-dinitroethenyl))hydrazone (EDNH) and 3-dinitromethyl-1,2,4-triazine (DNTA), were synthesized by the reaction of 1-amino-1-hydrazino-2,2-dinitroethylene (AHDNE) and glyoxal under different acid–base conditions, and reaction processes were discussed. Thermal decomposition behaviors of the two compounds were studied with DSC and TG/DTG methods, and the kinetic equations of decomposition process were obtained. Self-accelerating decomposition temperature and critical temperature of thermal explosion are 193.92 and 209.75\xa0°C for EDNH, and 242.46 and 259.94\xa0°C for DNTA, respectively. Specific heat capacities of the two compounds all present a square relationship with temperature in determined temperature range, and molar heat capacities at 298.15\xa0K are 331.30 and 213.13\xa0J\xa0mol −1 \xa0K −1 , respectively. DNTA and EDNH are relatively insensitive (>\u200935 and\u2009>\u200925\xa0J), which are much lower than that of AHDNE.