应用化学 ›› 2016, Vol. 33 ›› Issue (1): 39-46.DOI: 10.11944/j.issn.1000-0518.2016.01.150211

• 研究论文 • 上一篇    下一篇

3-硝基胍-6-(3,5-二甲基吡唑)-1,2,4,5-四嗪的晶体结构及热行为

李帅磊a,胡拥鹏a,胡荣祖b,马海霞a*()   

  1. a西北大学化工学院 西安 710069
    b西安近代化学研究所燃烧与爆炸技术重点实验室 西安 710065
  • 收稿日期:2015-06-23 接受日期:2015-09-17 出版日期:2016-01-05 发布日期:2016-01-05
  • 通讯作者: 马海霞
  • 基金资助:
    国家自然科学基金(21073141,21373161);教育部新世纪优秀人才支持计划资助项目(NCET-12-1047)

Crystal Structure and Thermal Behavior of 3-Nitroguanyl-6-(3,5-dimethylpyrazol-1yl)-1,2,4,5-tetrazine

LI Shuaileia,HU Yongpenga,HU Rongzub,MA Haixiaa*()   

  1. aSchool of Chemical Engineering,Northwest University,Xi'an 710069,China
    bScience and Technology on Combustion and Explosion Laboratory,Xi'an Modern Chemistry Research Institute,Xi'an 710065,China
  • Received:2015-06-23 Accepted:2015-09-17 Published:2016-01-05 Online:2016-01-05
  • Contact: MA Haixia
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21073141, No.21373161), Program for New Century Excellent Talents in University(No.NCET-12-1047)

摘要:

合成了3-硝基胍-6-(3,5-二甲基吡唑)-1,2,4,5-四嗪(NDT),在二甲基甲酰胺(DMF)中培养出NDT的单晶(NDT·DMF),该晶体属于三斜晶系,P-1空间群,晶胞参数为a=0.7070(4) nm,b=0.8468(6) nm,c=1.4123(9) nm,α=73.281(8)°,β=80.423(11)°,γ=81.740(9)°,Z=2。 利用DSC和TG-DTG研究了NDT的热分解行为,其放热过程的表观活化能和指前因子分别为288.245 kJ/mol和1029.04 s-1。 对NDT的热安全性进行了研究,获得NDT的自加速分解温度TSADT为212.19 ℃,热点火温度Tbe为213.52 ℃,热爆炸临界温度Tbp为214.95 ℃,绝热至爆时间范围在5.43~6.26 s。

关键词: 硝基胍-(二甲基吡唑)-四嗪, 晶体结构, 热行为, 绝热至爆时间

Abstract:

3-Nitroguanyl-6-(3,5-dimethylpyrazol-1yl)-1,2,4,5-tetrazine(NDT) was synthesized and its crystal structure was determined by X-ray diffraction analysis. Crystals of NDT·DMF have the following parameters:triclinic, space group P-1, a=0.7070(4) nm, b=0.8468(6) nm, c=1.4123(9) nm, α=73.281(8)°, β=80.423(11)°, γ=81.740(9)°, Z=2. Thermal decomposition behavior of NDT was studied by DSC and TG-DTG analysis. The apparent activation energy and pre-exponential constant of the exothermic decomposition reaction were obtained as 288.25 kJ/mol and 1029.04 s-1, respectively. The self-accelerating decomposition temperature(TSADT), the thermal ignition temperature(Tbe) and the critical temperature of thermal explosion(Tbp) are 212.19 ℃, 213.52 ℃and 214.95 ℃, respectively. The adiabatic time-to-explosion was also estimated to be 5.43~6.26 s.

Key words: nitroguanyl-(dimethylpyrazol-1yl)-tetrazine, crystal structure, thermal behavior, adiabatic time-to-explosion