Interest in modern high-energy density materials (HEDM) continues. 1–5 One of the most recent and exciting developments are salts with a high nitrogen content and with very high positive heats of formation that show remarkable insensitivity to friction, electrostatic discharge, and shock. The high heats of formation are directly attributable to the large number of inherently energetic N–N and C–N bonds. For example, triaminoguanidinium azotetrazolate 1 and nitroguanyl- ...