Barium Salts of Tetrazole Derivatives – Synthesis and Characterization

The compounds barium tetrazolate (6), barium 5‐aminotetrazolate tetrahydrate (7), barium 5‐nitriminotetrazolate dihydrate (8), barium bis(1H‐5‐nitriminotetrazolate) tetrahydrate (9), barium 1‐methyl‐5‐nitriminotetrazolate monohydrate (10), and barium 2‐methyl‐5‐nitriminotetrazolate dihydrate (11) were synthesized by the reactions of barium hydroxide octahydrate and 1H‐tetrazole (1), 5‐aminotetrazole (2), 1,4H‐5‐nitriminotetrazole (3), 1‐methyl‐5‐nitriminotetrazole (4), and 2‐methyl‐5‐nitraminotetrazole (5), respectively. The compounds were characterized using multi‐nuclear NMR spectroscopy, vibrational (IR and Raman) spectroscopy, elemental analysis, and differential scanning calorimetry. The solid‐state structures of 7–11 were determined using low temperature X‐ray diffraction and a comprehensive characterization is given. In addition, the sensitivities (impact, friction, electrical discharge) of 6–11 were investigated and bomb calorimetric measurements were carried out.