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Synthesis and Characterization of 1-Hydroxy-5-Methyltetrazole and Its Energetic Salts
Lukas J Eberhardt1, Maximilian Benz1, Jörg Stierstorfer1
1Department of Chemistry, Ludwig-Maximilian University of Munich, 81377 Munich, Germany.
Abstract:
The objective of this work was the synthesis and characterization of novel, insensitive high explosives. 1-hydroxy-5-methyltetrazole served as both a scaffold and anion for preparing various nitrogen-rich energetic salts. The compounds were characterized using 1H and 13C NMR spectroscopy, high-resolution mass spectrometry, elemental analysis, low-temperature single-crystal X-ray diffraction, and IR spectroscopy. Thermal stability was investigated via differential thermal analysis (DTA). Sensitivities towards mechanical stimuli were measured using a BAM drop hammer for impact sensitivity and a BAM friction apparatus for friction sensitivity, employing one of six testing procedures. Energetic performance parameters were calculated using the EXPLO5 code, incorporating room-temperature X-ray densities and solid-state heats of formation obtained via CBS-4M calculations using the Gaussian 16 program.
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