Crystal Structures, Thermal Behavior Analysis and Thermal Safety of Two Energetic Salts of Hydrazinyl-1,2,4,5-tetrazine with 3,5-Dinitrosalicylic Acid

作     者：CHEN Xiang ZENG Tian GUO Zhaoqi LI Shuailei MAI Tao GAO Rong MA Haixia 无

作者机构：School of Chemieal Engineering Northwest University Xi 'an 710069 P. R. China College of Chemistry and Materials Science Northwest University Xi 'an 710069 P. R. China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2018年第34卷第6期

页      面：959-964页

核心收录：

学科分类：08[工学] 0837[工学-安全科学与工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：Supported by the National Natural Science Foundation of China（Nos.21673179 21504067） and the National Students＇ Innovation and Entrepreneurship Training Program  China（No.201710697038）. 

主　　题：Tetrazine compound Dinitrosalicylic acid（DNS） Crystal structure Thermal behavior Thermal safety 

摘      要：Two energetic salts, DPHT.DNS-H20（1） and DHT.2DNS.2H20（2）[DPHT=3-（3,5-dimethyl-lH-pyrazol- 1-yl）-6-hydrazinyl-1,2,4,5-tetrazine; DHT=3,6-dihydrazinyl-l,2,4,5-tetrazine], were synthesized from S-tetrazine with 3,5-dinitrosalicylic acid（DNS）. Compounds 1 and 2 were structurally characterized by elemental analysis, infrared spectroscopy, and single-crystal X-ray diffraction. The thermal behavior of the title compounds was studied by differential scanning calorimetry（DSC） and thermogravimetry（TG）. The non-isothermal decomposition kinetics of compound 2 were investigated. The self-accelerating decomposition temperature, thermal ignition temperature, and critical temperatures of thermal explosion were obtained to evaluate the thermal safety of compound 2. The results show compounds 1 and 2 decompose at 150.8 and 179.2℃, respectively. The TSADT and Tb of compound 2 are higher than those of DHT, which indicates compound 2 is a potential candidate for energetic materials that have good thermal stability. Keywords Tetrazine compound; Dinitrosalicylic acid（DNS）; Crystal structure; Thermal behavior; Thermal safety