Theoretical Study on the Nitrogen-rich Derivatives Based on 1,2,4-Triazole and 1,2,3-Triazole Rings: an Extended Family of Power Performance Energetic Materials

JIA Jing-Xian, PANG Yu, YANG Jing*, LI Min-Xian, MENG Xiang-Jun, GAO Xiao-Zhen, LIU Li-Hua and LIU Meng-Na

Chin. J. Struct. Chem. 2021, 40, 1113-1121  DOI: 10.14102/j.cnki.0254-5861.2011-3143

September 15, 2021

4-nitro-5-(5-nitroimino-1,2,4-triazol-3-yl)-2H-1,2,3-triazolate, high energy density materials, density functional theory, explosive

ABSTRACT

The geometric and electronic structures of the derivatives of 4-nitro-5-(5-nitroimino-1,2,4-triazol- 3-yl)-2H-1,2,3-triazolate (named AJ) are explored employing density functional theory (DFT) calculations at the B3LYP/6-311G** level of theory. Based on the optimized molecular structures, the heats of formation (HOF) are obtained, and the electronic properties, density and molecular sensitivity by characteristic heights (H50) are discussed. Besides, the detonation performances (detonation velocity, detonation pressure) are estimated via Kamlet-Jacobs (K-J) formula. Compounds B (H50 = 29.4 cm, ρ = 1.91 g/cm3, Q = 1563.04 cal/g, P = 36.05 GPa, D = 8.95 km/s) and H (H50 = 31.9 cm, ρ = 1.80 g/cm3, Q = 1610.09 cal/g, P = 37.31 GPa, D = 9.12 km/s) have positive HOFs and remarkable insensitivity and good detonation performance, strongly suggesting them as the acceptable new-type explosive. The initiating power surpasses conventional primary explosives, such as HMX. The outstanding detonation power of compounds B and H contributes to its future prospects as a promising green primary explosive.

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