A series of three energetic cocrystals containing 5,5′-dinitro-2H,2H′-3,3′-bi-1,2,4-triazole (DNBT) were obtained. These incorporate a class of energetic materials that has seen significant synthetic work, the azole family (tetrazoles, triazole, pyrazole, etc.), and yet have struggled to see broad application. A cocrystal was obtained with the triazole 5-amino-3-nitro-1H-1,2,4-triazole (ANTA) in a stoichiometry of 2:1 (ANTA:DNBT). Two cocrystals were obtained with the pyrazoles 1H,4H-3,6-dinitropyrazolo[4,3-c]pyrazole (DNPP) and 3,4-dinitropyrazole (3,4-DNP) in ratios of 1:1 (DNPP:DNBT) and 2:1 (3,4-DNP:DNBT). All three cocrystals, 2:1 ANTA/DNBT (1), 1:1 DNPP/DNBT (2), and 2:1 3,4-DNP/DNBT (3), have high densities (>1.800 g/cm³) and high predicted detonation velocities (>8000 m/s). In small-scale impact drop tests, cocrystals 1 and 2 were both found to be insensitive, whereas cocrystal 3 possesses sensitivity between that of its two pure components 3,4-DNP and DNBT. The hydrogen bonding motif of the three components with DNBT is preserved among all three cocrystals, and this observation suggests a generally useful motif to be employed in the development of other energetic–energetic cocrystals. These cocrystals represent an area of energetic materials that has yet to be explored for cocrystalline materials.

中文翻译：

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设计和的系列富氮-5,5'-二硝基-2-含能共晶的合成ħ，2 ħ '-3,3'-双-1,2,4-三唑（DNBT）

一系列含有5,5'-二硝基3个高能共晶体2H，2 ħ获得'-3,3'-双-1,2,4-三唑（DNBT）。这些材料掺入了一类高能材料，这些材料已经取得了显着的合成作用，即吡咯家族（四唑，三唑，吡唑等），但仍难以广泛应用。与三唑5-氨基-3-硝基-1 H -1,2,4-三唑（ANTA）以2：1的化学计量比（ANTA：DNBT）获得了共晶体。用比例为1：1（DNPP）的吡唑1 H，4 H -3,6-二硝基吡唑并[4,3- c ]吡唑（DNPP）和3,4-二硝基吡唑（3,4-DNP）获得了两个共晶体：DNBT）和2：1（3,4-DNP：DNBT）。所有三个共晶体2：1 ANTA / DNBT（1），1：1 DNPP / DNBT（2）和2：1 3,4-DNP / DNBT（3），具有高密度（> 1.800 g / cm ³）和高预测爆轰速度（> 8000 m / s） 。在小规模冲击跌落试验中，共晶1和2均不敏感，而共晶3的灵敏度介于其两个纯组分3,4-DNP和DNBT之间。在所有三个共晶体中，具有DNBT的三个组分的氢键基序均得以保留，这一观察结果表明，在开发其他高能-高能共晶体时，通常会使用有用的基序。这些共晶代表了高能材料领域，尚未探索出共晶材料。