In situ synthesized 3D heterometallic metal–organic framework (MOF) as a high-energy-density material shows high heat of detonation, good thermostability and insensitivity

Abstract

A reticular 3D heterometallic metal-organic framework (MOF), [Cu4Na(Mtta)5(CH3CN)]n () (N% = 40.08%), has been synthesized, using a 5-methyl tetrazole (Mtta) ligand formed from acetonitrile and azide, through in situ synthesis and structurally characterized by X-ray single crystal diffraction. The fluorescence spectra demonstrate that undergoes an interesting structural transformation in aqueous solution, yielding the compound [Cu4Na(Mtta)5H2O]n () as confirmed by (1)H NMR, IR and PXRD. Thermoanalysis showed that possesses excellent thermostability up to 335 °C. The calculated detonation properties and the sensitivity test illustrate that compound could be used as a potential explosive. In addition, the non-isothermal kinetics for were studied using the Kissinger and Ozawa-Doyle methods. The enthalpy of formation was obtained from the determination of the constant-volume combustion energy.

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

“…Interestingly,t he burning test of compound 6 is completely differentt ot hat of the other compounds 1-5 and a long duration flashlight is observed in Figure 6(f), whichr eveals the potential of compound 6 in the application of af lash bomb. Moreover,i ts hould be noted that the barium-based compound 2 (1D) and compound 6 (3D) constructed from the same metal and ligand show dramatically different decomposition status during the tests, which illustrates that the difference in dimensions of energetic coordination polymers can lead to the different pyrotechnic effects and also indicatest hat CHHP [29] (2D)2 .00 27.32 31 6.21 17.96 0.75 0.8 --ZnHHP [29] (2D) 2.12 23.52 93 7.02 23.58 0.70 ---NHP [28] (1D)1 .98 33.52 20 9.18 39.69 1.37 ---CHP [28] (1D) 1.95 33.51 94 8.23 31.73 1.25 0.5 --HMX [28] 1 the burning properties of pyrotechnic ECPs can be adjusted through the regulation of the dimensionality.…”

“…Ever since the advent of coordination polymers (CPs), chemists have explored their possible properties and applications. [10][11][12][13][14][15][16][17][18] As an ew access to IHEs, energetic coordination polymers (ECPs) [19][20][21][22][23][24][25][26][27][28][29][30][31][32] are emerging with both excellent safety and high energy,ast heir specific composition(organicsand inorganics) and various dimensionalities (1D, 2D, and3 D) give strong structuralr einforcements and extensive coordination networks, in whichs horter covalentc oordination bonds will lead to higherd ensity ands tability. [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.…”

Gem‐dinitromethyl‐substituted Energetic Metal–Organic Framework based on 1,2,3‐Triazole from in situ Controllable Synthesis

“…Strong intermolecular H‐bond interaction was found in Figure b with 2.15–2.45 Å length. Because the existence of H ‐bond interaction as well as O atoms and N atoms both coordinating with K ions, Figure c shows a 3D framework of compound 8 which represents a rarely seen “cage‐like” crystal packing in 1,2,3‐traizole except for the previously described beetle‐like 3D network by S. Chen et al . Accordingly, two molecules could be assemble into a fused‐ring like framework which is similar to benzo[1,2‐d:4,5‐d′]bistriazole (Figure S1).…”

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.…”

“…The sensitivities of these 3D MOFs are significantly lower than those of reported energetic coordination polymers, such as 1D (CHP, IS = 0.5 J) and 2D (ZnHHP, IS = 2.5 J; CHHP, IS = 0.8 J) MOFs. An increasing number of investigations on E-MOFs as new-generation high explosives were reported by Chen et al [32,33,36,38,39,40,42,44,45,50,51], Pang et al [28,48,52], Shreeve et al [49,53], and so on [41,47,54,55,56] because of the advantages of 3D MOFs.…”