十二氢十二硼酸双(二烷基-5-氨基四唑)盐的合成, 表征及热性能

Lili Sheng, Zixing Shan, Xiaoyan Guo, Rongjie Yang*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

4 引用 (Scopus)

摘要

We tried combining dodecahydrodecaborane anion (B12H12 2-) with aminotetrazole cation into a series of new borohydrino-tetrazolium salt as a kind of energetic materials. Firstly, by using 1-or 2-5-aminotetrazole (5-ATZ) as the raw material, dialkylated 5-aminotetrazolium iodide was synthesized via dialkylation reaction with methyl iodide and ethyl iodide. And then, the dialkylated 5-aminotetrazolium iodides was used to react with potassium dodecylhydrodecaborate in an aqueous solution by metathesis. Finally, eleven novel bis(dialkyl-5-aminotetrazolium) dodecahydrododecaborates were synthesized. All of them were in yield of above 70%, and their chemical properties were stable under the conditions of purification and drying. These compounds have been characterized by FT-IR, 1H NMR, 13C NMR, 11B NMR, mass spectrometry, and elemental analysis. In inspecting their thermal properties using differential scanning calorimetry (DSC) and thermogravimetric analysis (TG) technologies, the results showed that eleven kinds of bis(dialkyl-5-aminotetrazolium) dodecahydrododecaborates have higher thermal stability and the thermal decomposition temperatures of them are mostly above 200℃. In molecular structures, their thermal stability decrease with the increase of the 4-position alkyl when the 1-position alkyl maintains the same. The rapid thermal decomposition of the five compounds, 1,4-dimethyl, 1-methyl-4-ethyl, 1,3-dimethyl, 1-methyl-3-ethyl, and 1-ethyl-3-methyl, occurred before the melting, and the rapid thermal decomposition of the other 6 compounds occurred after the crystals melting. These high-energetic compounds are of great importance in developing new high-performance propellants.

投稿的翻译标题Synthesis, Characterization and Thermal Behavior of Bis(dialkyl-5-aminotetrazolium) Dodecadodecaborates
源语言繁体中文
页(从-至)2093-2100
页数8
期刊Chinese Journal of Organic Chemistry
38
8
DOI
出版状态已出版 - 1 8月 2018

关键词

  • Dialkyl-5-aminotetrazole
  • Dodecadodecaborate
  • Energetic material
  • Synthesis
  • Tetrazolium
  • Thermal property

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