Synthesis, Characterization and Derivatives of Iso‐Picramic Acid

Abstract

Comparing the sensitive explosives DDNP (2-diazonium-4,6-dinitrophenolate) with iso-DDNP (para-DDNP, 4-diazonium-2,6-dinitrophenolate), it seems obvious that with increasing symmetry in the molecule, the energetic parameters also increase. This work therefore investigates whether the same trend can be applied for the isomers picramic acid (2-amino-4,6-dinitrophenol) and iso-picramic acid (para picramic acid, 4-amino-2,6-dinitrophenol). For this purpose, iso-picramic acid was synthesized and compared with the properties of picramic acid. In addition, selected ionic and other energetic derivatives such as 2,6-dinitro-4-(5H-tetrazol-1-yl)phenol were synthesized. The compounds were extensively studied by XRD, IR, EA, DTA and TGA. Further, their sensitivities towards impact and friction were investigated and the energetic properties were computed using the EXPLO5 code.

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