A New Strategy for Storage and Transportation of Sensitive High‐Energy Materials: Guest‐Dependent Energy and Sensitivity of 3D Metal–Organic‐Framework‐Based Energetic Compounds

Abstract

Reaction of Co(II) with the nitrogen-rich ligand N,N-bis(1H-tetrazole-5-yl)-amine (H2bta) leads to a mixed-valence, 3D, porous, metal-organic framework (MOF)-based, energetic material with the nitrogen content of 51.78%, [Co9(bta)10(Hbta)2(H2O)10]n⋅(22 H2O)n (1). Compound 1 was thermohydrated to produce a new, stable, energetic material with the nitrogen content of 59.85% and heat of denotation of 4.537 kcal cm(-3), [Co9(bta)10(Hbta)2(H2O)10]n (2). Sensitivity tests show that 2 is more sensitivity to external stimuli than 1, reflecting guest-dependent energy and sensitivity of 3D, MOF-based, energetic materials. Less-sensitive 1 can be regarded as a more safe form for storage and transformation to sensitive 2.

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

“…Compound 1 was synthesized according to our recent work [11]. Compound 1 can be obtained by different routes under hydrothermal methods (Scheme 1).…”

“…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.…”

“…III) ions for Co1 and Co2 as well as Co(II) ions for Co3, Co4, and Co5, which are identified by the Co−N and Co−O distances[12], are further conformed through the bondvalence analysis fromPLATON [13] and the electronic spectra[11]. These Co centers are linked by chelatingbridging Hbta  /bta 2 ligands to generate a 3D MOF with alternative ···Co(III)···Co(II)··· array and channels incorporating guest water molecules (Figure 3); this MOF is composed of the Co(III) anionic linkers [Co III (bta) 2 (Hbta)] 2 / [Co III (bta) 3 ] 3 and the Co(II) nodes [Co II (N 4 O 2 )]…”

Nitrogen-Rich Energetic Metal-Organic Framework: Synthesis, Structure, Properties, and Thermal Behaviors of Pb(II) Complex Based on N,N-Bis(1H-tetrazole-5-yl)-Amine

“…Many investigators have recently demonstrated the possibility of using nitrogen-rich MOFs as high explosives [25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48]. MOFs consist of metal ions (Pb 2+ , Ag + , etc.…”