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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Preparation and characterization of 3,5-dinitro-1H-1,2,4-triazole
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Preparation and characterization of 3,5-dinitro-1H-1,2,4-triazole

机译：3,5-二硝基-1H-1,2,4-三唑的制备与表征

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摘要

Neat 3,5-dinitro-1H-1,2,4-triazole was obtained in quantitative yield from potassium 3,5-dinitro-1,2,4-triazolate and sulfuric acid. The compound was purified by sublimation in vacuo at 110 degrees C. Pure HDNT is a hygroscopic white solid that is impact and friction sensitive and decomposes explosively upon heating to 170 degrees C. However, the presence of impurities might lower the decomposition temperature and increase the sensitivity of the material. Potassium 3,5-dinitro-1,2,4-triazolate was prepared from commercially available 3,5-diamino-4H-1,2,4-triazole with sodium nitrite and sulfuric acid. The synthesis of HDNT from 2-cyanoguanidine and hydrazine hydrate without isolation and purification of the 3,5-diamino-4H-1,2,4-triazole intermediate can result in the formation of azidotriazole impurities. A triclinic and a monoclinic polymorph of 3,5-dinitro-1H-1,2,4-triazole were found by X-ray structure determination. In addition, the crystal structure of the hydrate (HDNT)(3)center dot 4H(2)O, as well as those of several HDNT impurities and decomposition products were obtained.
机译：从3,5-二硝基-1,2,4-三唑酸钾和硫酸中定量获得了纯的3,5-二硝基-1H-1,2,4-三唑。通过在110摄氏度的真空中升华来纯化该化合物。纯HDNT是吸湿性白色固体，具有冲击和摩擦敏感性，加热至170摄氏度时会爆炸性分解。但是，杂质的存在可能会降低分解温度并增加其分解度。材料的敏感性。由市售的3,5-二氨基-4H-1,2,4-三唑与亚硝酸钠和硫酸制备3,5-二硝基-1,2,4-三唑酸钾。由2-氰基胍和水合肼合成HDNT而未分离和纯化3,5-二氨基-4H-1,2,4-三唑中间体可导致叠氮三唑杂质的形成。通过X射线结构测定，发现3，5-二硝基-1H-1，1,2,4-三唑的三斜晶型和单斜晶型。另外，获得了水合物（HDNT）（3）中心点4H（2）O的晶体结构，以及几种HDNT杂质和分解产物的晶体结构。

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