Lithium-Promoted Formation of (M = NH or NHOH and = Anion of 1-Hydroxytetrazole-5-hydrazide)-Type "Quaternary" Complexes with Nitrogen-Rich Characteristics: Construction of Novel Insensitive Energetic Materials.

Lithium-based nitrogen-rich complexes are important research objects in the field of high-energy materials. However, the weak coordination abilities of lithium ions relative to those of other metal ions with greater atomic numbers have hindered their applications in the field of nitrogen-rich complexes. Herein, we successfully prepared novel lithium-based nitrogen-rich complexes ( and ) by exploiting the structural properties of 1-hydroxytetrazolium-5-hydrazine (). Both and were found to exhibit physicochemical parameters (including the density, stability, and energetic properties) that were intermediate between those of the simple ionic compounds ( and ) and the complexes () that formed them, enabling a favorable balance between high energy, high stability, and environmental friendliness (for : detonation velocity () = 9005 m s, detonation pressure () = 35.5 GPa, decomposition temperature () = 238.1 °C, impact sensitivity (IS) = 24 J, friction sensitivity (FS) = 210 N, and detonation product (DP) (CO) < 2%; for : = 9028 m s, = 35.7 GPa, = 211.2 °C, IS = 20 J, FS = 180 N, and DP (CO) < 2%). This study transcends the conventional structural forms of nitrogen-rich complexes, opening new horizons for the design of novel insensitive energetic materials.