Triazene-bridged energetic materials based on nitrotriazole: synthesis, characterization, and laser-ignited combustion performance

A new family of triazene-bridged energetic materials based on nitrotriazole with excellent combustion properties was synthesized and investigated.

Properties and Promise of Catenated Nitrogen Systems As High-Energy-Density Materials

The properties of catenated nitrogen molecules, molecules containing internal chains of bonded nitrogen atoms, is of fundamental scientific interest in chemical structure and bonding, as nitrogen is uniquely situated in the periodic table to form kinetically stable compounds often with chemically stable N-N bonds but which are thermodynamically unstable in that the formation of stable multiply bonded N₂ is usually thermodynamically preferable. This unique placement in the periodic table makes catenated nitrogen compounds of interest for development of high-energy-density materials, including explosives for defense and construction purposes, as well as propellants for missile propulsion and for space exploration. This review, designed for a chemical audience, describes foundational subjects, methods, and metrics relevant to the energetic materials community and provides an overview of important classes of catenated nitrogen compounds ranging from theoretical investigation of hypothetical molecules to the practical application of real-world energetic materials. The review is intended to provide detailed chemical insight into the synthesis and decomposition of such materials as well as foundational knowledge of energetic science new to most chemists.

Synthesis of 3,5-ditetrazolyl-1,2,4-triazole-based complexes: a strategy for developing C–N-linked triheterocyclic energetic compounds

Two complexes based on the novel C–N-linked triheterocyclic compound 3,5-ditetrazolyl-1,2,4-triazole (DTT) were reported for the first time. The present study has contributed to the field of C–N-linked polyheterocyclic systems and has provided a new insight into the design and synthesis of new energetic materials.

Synthesis and properties of insensitive [1,2,4]triazolo[4,3-b]-1,2,4,5-tetrazine explosives

An insensitive explosive 3-nitro[1,2,4]triazolo[4,3-b]1,2,4,5-tetrazin-6-amine (TTNA) was prepared and fully structurally characterized with good detonation parameters (T_d = 213 °C; P = 33.9 GPa; D = 8953 m s⁻¹, IS > 40 J, and FS > 360 N).

Preparation and characteristics of 1,2,4-oxadiazole-derived energetic ionic salts with nitrogen linkages

A new family of nitrogen-bridged energetic ionic salts were synthesized exhibiting good stabilities and low sensitivities.

A novel facile transformation to 1,2-bis(3-nitro-1-(1H-tetrazol-5-yl)-1H-1,2,4-triazol-5-yl)hydrazine salts

A facile and unique conversion from NN group to HN–NH group was discovered, by which 1,2-bis(3-nitro-1-(1H-tetrazol-5-yl)-1H-1,2,4-triazol-5-yl)hydrazine and its energetic salts have been readily prepared as high-energy-density materials.

Synthesis of 5,5′-azoxybistetrazole via nitration and de-oxygen rearrangement of triazene

An unusual transformation of tetrazole triazene into 5,5′-azoxybistetrazole by a sequential treatment with fuming nitric acid and acetyl anhydride.