Nitrogen-rich energetic dianionic salts of 3, 4-bis(1H-5-tetrazolyl)furoxan with excellent thermal stability

Abstract

Nitrogen-rich 3, 4-bis(1H-tetrazol-5-yl)furoxan (H 2BTF, 2) and its energetic salts with excellent thermal stability were successfully synthesized and fully characterized by 1H, and 13C NMR, and IR spectroscopy, differential scanning calorimetry (DSC), and elemental analyses. Additionally, the structures of barium (3) and 1-methyl-3, 4, 5-triamino-triazolium (10) salts were confirmed by single-crystal X-ray diffraction. The densities of the energetic salts paired with organic cations range between 1.56 and 1.85 g·cm -3 as measured by a gas pycnometer. Based on the measured densities and calculated heats of formation, the detonation pressures and velocities are calculated to be in the range 23.4-32.0 GPa and 7939-8915 m·s -1, which make them competitive energetic materials. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.