新型高能有机钾盐K(DNDZ)的晶体结构和热行为研究(英文) |
Structural Characterization and Thermal Behavior of a New High-Energy Organic Potassium Salt: K(DNDZ) |
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摘要: 合成了一种新型高能有机钾盐2-(二硝基亚甲基)-1,3-二氮杂环戊烷钾盐[K(DNDZ)],并培养出单晶。该晶体属单斜晶系,空间群P21/n,晶胞参数为:a=0.506 31(19) nm,b=1.336 2(5) nm,c=1.164 9(4) nm,β=99.860(6)°,V=0.776 5(5) nm3,Z=4,μ=0.674 mm-1,F(000)=432,Dc=1.815 g·cm-3。用非等温DSC法研究了K(DNDZ)的热行为,第一放热分解反应的放热焓、表观活化能和指前因子分别为444.75 kJ·mol-1,152.2 kJ·mol-1和1013.92 s-1。其热爆炸的临界温度为208.63 ℃。 |
关键词: 1,1-二氨基-2,2-二硝基乙烯(FOX-7) 2-(二硝基亚甲基)-1,3-二氮杂环戊烷(DNDZ) 晶体结构 热行为 |
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Abstract: A new high-energy organic potassium salt, 2-(dinitromethylene)-1,3-diazacyclopentane potassium salt [K(DNDZ)], was synthesized and structurally characterized. The crystal belongs to monoclinic system with space group P21/n and a=0.506 31(19) nm, b=1.336 2(5) nm, c=1.164 9(4) nm, β=99.860(6)°, V=0.776 5(5) nm3, Z=4, μ=0.674 mm-1, F(000)=432, and Dc=1.815 g·cm-3. Thermal behavior of K(DNDZ) was studied under the non-isothermal conditions by DSC method. The enthalpy, apparent activation energy and pre-exponential factor of the first exothermic decomposition reaction were 444.75 kJ·mol-1, 152.2 kJ·mol-1 and 1013.92 s-1, respectively. The critical temperature of thermal explosion (Tb) for K(DNDZ) is 208.63 ℃. CCDC: 675360. |
Keywords: 1,1-diamino-2,2-dinitroethylene (FOX-7) 2-(dinitromethylene)-1,3-diazacyclopentane (DNDZ) crystal structure thermal behavior |
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张腊莹,徐抗震,宋纪蓉,赵凤起,衡淑云,王尧宇.新型高能有机钾盐K(DNDZ)的晶体结构和热行为研究(英文)[J].无机化学学报,2010,26(5):899-904. |
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