合成了三硝基间苯三酚一铵盐NH4(H2TNPG),并对其进行了元素分析及红外表征.利用X射线单晶分析测定了其晶体结构,晶体属于单斜晶系,空间群为C2/c,晶体学数据为: a=9.307(2)Α,b=21.144(6)Α,c=9.797(2)Α,β=99.56(3)°,V=1901.0(8)Α3,Z=8.该化合物是由一个铵根离子与一个一价的三硝基均苯三酚负离子相结合而形成的离子型化合物,分子中存在的大量氢键及铵根离子与三硝基均苯三酚负离子之间的静电引力使得该化合物具有较高的热稳定性和较低的感度.用DSC、TG-DTG技术研究了标题化合物的热分解,研究结果表明: 在10 ℃·min-1的升温速率下,标题化合物只有一个剧烈的放热分解过程,该过程发生在219.2～234.3 ℃之间,分解产物主要是气体产物.感度测试结果表明,该化合物对外部刺激钝感.%A new compound of mono-ammonium trinitrophloroglucinolate [NH4(H2TNPG),TNPG=Trinitrophloroglucinol] was synthesized and characterized by elemental analysis and Fourier transform infrared (FT-IR) spectrum. Its crystal structure was determined by single crystal X-ray diffraction analysis. The crystal belongs to monoclinic, C2/c space group, a=9.307(2)Α, b=21.144(6)Α, c=9.797(2)Α, β=99.56(3)°, V=1901.0(8)Α3 and Z=8. The compound is an ionic compound consisting of a cation NH4+ and an anion C6H2N3O9-, and it is the mono-substituted salt of TNPG. Since the existence of complicated hydrogen bond networks and electrostatic attraction between NH4+ cation and C6H2N3O9- anion, the compound possesses better stability and low sensitivity. The thermal analysis of the compound was studied by using differential scanning calorimetry (DSC), and thermogravimetry thermogravimetry-derivative analysis (TG-DTG). Under nitrogen atmosphere with the heating rate of 10 ℃·min-1, the thermal decomposition of the compound show only one intense exothermic decomposition process at 219.2-234.3 ℃ on the DSC curve, and the decomposition products are nearly all gaseous products. Sensitivity Test revealed that the title compound is very insensitive to external stimuli.
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