物理化学学报 >> 2008, Vol. 24 >> Issue (07): 1155-1159.doi: 10.1016/S1872-1508(08)60051-0

研究论文 上一篇    下一篇

(TAGH)2(TNR)的合成、晶体结构及热分析

刘振华; 敖国军; 张同来; 杨利; 张建国; 臧艳   

  1. 北京理工大学爆炸科学与技术国家重点实验室, 北京 100081
  • 收稿日期:2008-03-03 修回日期:2008-04-07 发布日期:2008-07-04
  • 通讯作者: 张同来 E-mail:ztlbit@bit.edu.cn

Synthesis, Crystal Structure and Thermal Analysis of (TAGH)2(TNR)

LIU Zhen-Hua; AO Guo-Jun; ZHANG Tong-Lai; YANG Li; ZHANG Jian-Guo; ZANG Yan   

  1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, P. R. China
  • Received:2008-03-03 Revised:2008-04-07 Published:2008-07-04
  • Contact: ZHANG Tong-Lai E-mail:ztlbit@bit.edu.cn

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摘要： 合成了三氨基胍三硝基间苯二酚盐(TAGH)2(TNR) (TAG: 三氨基胍; TNR: 2,4,6-三硝基间苯二酚), 并对其进行了元素分析及红外光谱表征. 利用X射线单晶衍射分析测定了其晶体结构. 该晶体属于单斜晶系, 空间群为C2/c, 晶体学数据为, a=2.2892(6) nm, b=1.2802(3) nm, c=1.3661(4) nm, β=111.174(5)°, V=3.7333(16) nm3, Z=8. 该化合物是由二个C(N2H3)+3与一个(C6HN3O8)2-相结合而成的离子型化合物. 用差示扫描量热法、热重法和微商热重法研究了该化合物的热分解过程, 研究结果表明, 在10 K·min-1的升温速率下, 该化合物只有一个剧烈的放热分解过程, 该过程发生在450.1-477.7 K之间, 且分解产物主要是气体产物.

关键词: 三氨基胍, 三硝基间苯二酚, 晶体结构, 热分析

Abstract: A new energetic compound (TAGH)2(TNR) (TAG: triaminoguanidine, TNR: 2,4,6-trinitroresorcinol) was prepared by reacting triaminoguanidine with 2,4,6-trinitroresorcinol (styphnic acid) in aqueous solution under nitrogen atmosphere, and characterized by elemental analysis and Fourier transform infrared (FTIR) spectra. Its crystal structure was determined by single crystal X-ray diffraction analysis. The crystal belonged to a monoclinic, C2/c space group. The unit cell parameters were as follows: a=2.2892(6) nm, b=1.2802(3) nm, c=1.3661(4) nm, β=111.174(5)°, V=3.7333(16) nm3, and Z=8. The compound consisted of two cations C(N2H3)+3 and an anion (C6HN3O8)2-. The C(N2H3)+3 and (C6HN3O8)2- were bonded together by electrostatic attraction and hydrogen bonds, and this effect made the compound more stable. The thermal analysis of the compound was studied by using differential scanning calorimetry (DSC), thermogravimetry-derivative thermogravimetry (TG-DTG). Under nitrogen atmosphere with a heating rate of 10 K·min-1, the thermal decomposition of the compound contained only one intense exothermic decomposition process in the range of 450.1-477.7 K in the DSC curve, and the decomposition products were nearly gaseous products.

Key words: Triaminoguanidine, 2,4,6-Trinitroresorcinol, Crystal structure, Thermal analysis