Metal–Organic Frameworks (MOFs) as Safer, Structurally Reinforced Energetics

Abstract

Second-generation cobalt and zinc coordination architectures were obtained through efforts to stabilize extremely sensitive and energetic transition-metal hydrazine perchlorate ionic polymers. Partial ligand substitution by the tridentate hydrazinecarboxylate anion afforded polymeric 2D-sheet structures never before observed for energetic materials. Carefully balanced reaction conditions allowed the retention of the noncoordinating perchlorate anion in the presence of a strongly chelating hydrazinecarboxylate ligand. High-quality X-ray single-crystal structure determination revealed that the metal coordination preferences lead to different structural motifs and energetic properties, despite the nearly isoformulaic nature of the two compounds. Energetic tests indicate highly decreased sensitivity and DFT calculations suggest a high explosive performance for these remarkable structures.

Study of Six Green Insensitive High Energetic Coordination Polymers Based on Alkali/Alkali‐Earth Metals and 4,5‐Bis(tetrazol‐5‐yl)‐2 H‐1,2,3‐triazole

“…[33][34][35][36] Inspired by this, many ECPs have been synthesized and characterizedd uring last decades ince the first one was achievedb yH ope-Weeks and co-workers. [37,38] However,i deal insensitive high-energetic coordination polymers (IH-ECPs) conforming to the concept of IHEs with outstanding insensitivity (IS > 40 J, FS > 360 N) and detonation velocity( D > 9kms À1 )a re rare in the published literature. [39][40][41][42][43][44][45][46][47] To date, only two high-performance IH-ECPsh ave been constructed based on tetrazole derivatives:4 ,4'oxybis(3,3'-(1 H-5-tetrazol))furazan [46] and bis(tetrazole)methane.…”

A 1D cadmium complex with 3,4-diamino-1,2,4-triazole as ligand: synthesis, molecular structure, characterization, and theoretical studies

“…According to experiment measurements and quantum chemical calculations, 1 is heat-resistant and has good energetic properties. Therefore, compared to the common explosive RDX (T dec = 483.2 K)[55] and energetic coordination compounds, such as CHP (T dec = 467.2 K) and NHP (T dec = 493.2 K)[56], 1 may be candidate as a thermally resistant energetic compound.Table 1. Crystal data and structure refinement for 1.…”

3D Co(II, III) mixed-valence metal-organic framework affording field-induced slow magnetic relaxation

“…Much recent research has focused on MOFs that contain nitrogen-rich heterocyclic ligands and non-toxic metal ions as newgeneration green primary explosives become a new concept for energetic materials [7][8][9][10]. In our recent work [11], we obtained two MOF-based energetic compounds that present an ingenious design for guest-dependent energy and sensitivity of 3D MOF-based energetic compound and also offer a practical strategy for the storage and transportation of high-energy materials.…”