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Current Organic Chemistry

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ISSN (Print): 1385-2728
ISSN (Online): 1875-5348

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Research Article

Synthesis, Crystal Structure and Thermal Decomposition of a New Energetic Potassium Salt of dihydridobis(3-nitro-1,2,4-triazolyl) Borate

Author(s): Wang Guodong, Liu Yucun*, Liu Guoqing, Jing Suming and Liao Longyu

Volume 24, Issue 9, 2020

Page: [1042 - 1047] Pages: 6

DOI: 10.2174/1385272824999200515093531

Price: $65

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).

Keywords: Energetic complex, 3-nitro-1-2-4-triazole, crystal structure, thermal decomposition, combustion catalyst, propellant.

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