The standard enthalpies of formation of alkoxy-NNO-azoxy compounds

Guanidinium Formate Decomposition on the (101) TiO2-Anatase Surface: Combined Minimum Energy Reaction Pathway Calculations and Temperature-Programmed Decomposition Experiments

“…The overall reaction was calculated to be exothermic with E r = −0.92 eV. In comparison, a value of E r = −0.9 ± 0.5 eV can be calculated using values obtained from experiments: Δ H f ° solid (guanidine) = −56 kJ/mol, Δ sublimation H °(urea) = 99 kJ/mol, Δ H f ° gas (water) = −242 kJ/mol, Δ H f ° gas (ammonia) = −46 kJ/mol [], and Δ H f ° gas (carbon dioxide) = −394 kJ/mol []. As the enthalpy of sublimation for guanidine is unknown, the value for urea was used with an approximated error of 50%.…”

Quantum chemical investigation of the 1‐methyl‐ and 1‐neopentyl‐2‐methoxydiazene‐1‐oxides thermal decomposition mechanisms

“…This is primarily related to the higher enthalpy of ADO formation compared to nitramines of the same elemental composition. [4] In addition, the simplest representatives of ADO are much more inert to chemical reagents (acids, bases, oxidizing agents, and reducing agents) compared to nitramines. [5][6][7][8][9] Some new ADOs have been proposed as components of EM, including those containing other energy-intensive groups.…”

2,2‐Bis(methoxy‐NNO‐azoxy)ethyl Derivatives of 4,8‐Dihydro‐bis‐furazano[3,4‐b:3′4′‐e]pyrazine: The Synthesis and X‐ray Investigation

“…On the other hand, the methoxy‐ NNO‐ azoxy group have the same elemental composition as the N ‐methyl‐ N ‐nitroamine group, R—N(NO 2 )Me. The replacement of nitramino moiety by isomeric oxy‐ NNO ‐azoxy moiety tends to increase enthalpy of formation by 6–15 kcal/mol per one N 2 O 2 moiety , and in so doing contributes markedly to the overall energetic performance. ADO, as a rule, has higher melting points than isomeric nitramines but usually reveal lower densities.…”