A Hyper-conjugated Structure: The Research into the Picryl Chloride Functionalized 1-Picrylamino-tetrazol-5-one

A hyper conjugated structure, picryl chloride functionalized 1-picrylamino-tetrazol-5-one, was synthesized by a nucleophilic substitution reaction. The single crystals of 1-picrylamino-tetrazol-5-one were cultured and determined by X-ray single-crystal diffractometer. The thermal behavior was investigated by differential scanning calorimetry (DSC) and thermogravimetry-derivative thermogravimetry (TG-DTG) technologies. Additionally, the sensitivities towards friction and impact were tested. The results show that the hyper conjugated structure adopts a π–π stacking, besides, many strong interactions such as nitro–π and hydrogen bonding interactions were observed. All of them together make a contribution to its enhanced thermal stability and reduced sensitivities. 1-Picrylamino-tetrazol-5-one turns out to be a representative of hyper conjugated structures in energetic materials, and may further strengthen the functionalization of picryl chloride with energetic tetrazoles.