Journal of Molecular Structure: THEOCHEM published new progress about 84406-63-3. 84406-63-3 belongs to triazoles, auxiliary class Triazole,Nitro Compound, name is 4-Nitro-2H-1,2,3-triazole, and the molecular formula is C2H2N4O2, Quality Control of 84406-63-3.
Gamezo, V. N. published the artcileTheoretical analysis of the effects of nitration of the explosive properties of triazoles: 4-nitro-2H-1,2,3-triazole and 4,5-dinitro-2H-1,2,3-triazole, Quality Control of 84406-63-3, the publication is Journal of Molecular Structure: THEOCHEM (1995), 337(2), 189-97, database is CAplus.
At the mol. level, the ground-state intrinsic energies of the C-NO2 and N-N bonds and the excited-state bond polarities of the 4-nitro- and 4,5-dinitro-2H-1,2,3-triazoles were compared using their theor. optimized geometries. Their enthalpies of formation were calculated using a modified Xα approach; finally, their explosive characteristics were studied at the macroscopic level with the help of the thermodn. code of Kondrikov-Sumin. With respect to the planar mononitro derivative, the second nitration provokes: (1) a torsion of ∼30° of the two nitro groups, (2) a significantly decreased C-N bond dissociation energy, by ∼9 kcal/mol, together with a weakening of the N-N bonds, thus reducing thermal stability, (3) an increase of C-NO2 and N-N bond polarities in the electronically excited states, correlated with a decreased shock sensitivity, and (4) an increase in gas-phase enthalpy of formation, from -25 kcal/mol (or -51 kcal/mol, estimated for the condensed phase) for the mononitro derivative to +65 kcal/mol (e.g., +50 kcal/mol) for the dinitro compound Using these enthalpy results and a Kondrikov-Sumin-like equation of state, one can describe the ideal velocity of detonation DCJ as a function of the d. ρ0 by DCJ = 0.337 + 3.86ρ0 ,and DCJ = 2.246 + 3.61ρ0 for the mononitro and dinitro derivatives, resp., thus giving the corresponding detonation velocities of 6.5 and 8.0 km/s for an assumed d. of 1.6 g/m3.
Journal of Molecular Structure: THEOCHEM published new progress about 84406-63-3. 84406-63-3 belongs to triazoles, auxiliary class Triazole,Nitro Compound, name is 4-Nitro-2H-1,2,3-triazole, and the molecular formula is C2H2N4O2, Quality Control of 84406-63-3.
Referemce:
https://en.wikipedia.org/wiki/1,2,3-Triazole,
Triazoles – an overview | ScienceDirect Topics