Title:Synthesis, Crystal Structure and Thermal Decomposition of a New Energetic Potassium Salt of dihydridobis(3-nitro-1,2,4-triazolyl) Borate
Volume: 24
Issue: 9
Author(s): Wang Guodong, Liu Yucun*, Liu Guoqing, Jing Suming and Liao Longyu
Affiliation:
- School of Environment and Safety Engineering, North University of China, Taiyuan 030051,China
Keywords:
Energetic complex, 3-nitro-1-2-4-triazole, crystal structure, thermal decomposition, combustion catalyst, propellant.
Abstract: A new energetic organic potassium salt of dihydridobis (3-nitro-1,2,4-triazolyl)
borate was synthesized from 3-nitro-1,2,4-triazole and potassium borohydride at 110 °C,
and structurally characterized by elemental analysis, IR spectra, 13C NMR and singlecrystal
X-ray diffraction. Results show that the crystal belongs to monoclinic system with
space group of p21 / C and cell parameters of a = 10.335 (8) Å, B = 10.812 (8) Å, C =
9.821 (8) Å, α = 90 ˚, β = 106.470 (13), γ = 90 °, z = 4. Its crystal density is 1.755g/cm3.
Thermal properties were studied with TG-DTA and DSC. There was only one sharp decomposition
peak temperature of 270 °C at the heating rate of 10 °C/ min-1. The activation
energies EK = 48.0kJ/mol-1 and EO = 49.8kJ/mol-1 were calculated by the Kissinger method
and Ozawa method respectively (CCDC: 1975139).
