Thermochemical and energy characteristics of N-(2,2,2-trinitroethyl)aminoand N-(2,2,2-trinitroethyl) nitroamino-derivatives of asidotriazines

The standard enthalpies of formation were experimentally measured for four compounds: 4,6-diazido-N-(2,2,2-trinitroethyl)-1,3,5-triazine-2-amine, 6-azido-N$^2$, N$^4$-bis(2,2,2-trinitroethyl)-1,3,5-triazine-2,4-diamine, 6-azido-N$^2$, N$^4$-dinitro-N$^2$, N$^4$-bis(2,2,2- trinitroethyl)-1,3,5-triazine-2,4-diamine, and N$^2$, N$^4$, N$^6$-trinitro-N$^2$, N$^4$, N$^6$-tris(2,2,2-trinitroethyl)-1,3,5-triazine-2,4,6-triamine – 690.1 $\pm$ 5.9, 326.2 $\pm$ 13.6, 630.1 $\pm$ 6.1, 415.9 $\pm$ 9.3 kJ/mol, respectively. Based on these values, the energy equivalent of replacing the hydrogen atom and the azido group by trinitroethylamine and trinitroethylnitramine groups in triazine and azido-substituted derivatives of triazine. Calculations have shown that 6-azido-N$^2$, N$^4$-dinitro-N$^2$, N$^4$-bis(2,2,2-trinitroethyl)-1,3,5-triazine-2,4-diamine, and N$^2$, N$^4$, N$^6$-trinitro-N$^2$, N$^4$, N$^6$-tris(2,2,2-trinitroethyl)-1,3,5-triazine-2,4,6-triamine with an oxygen supply ratio greater than 1.0 can be used as the basis for designing compositions with a low aluminum content and with a specific impulse of 257–260 s.