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含能材料  2014 

(FOX-7)2的合成、晶体结构和热行为

DOI: 10.3969/j.issn.1006-9941.2014.04.002

Keywords: 结构化学,1,1-二氨基-2,2-二硝基乙烯(FOX-7),锌化合物,晶体结构,热行为

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Abstract:

合成了一种新型含能锌配合物(FOX-7)2,并测定其晶体结构。该晶体属单斜晶系,空间群C2/c,晶胞参数为:a=0.77170(16)nm,b=1.6720(3)nm,c=1.6996(3)nm,β=94.333(3)°,V=2.1867(7)nm3,Z=4,μ=1.194mm-1,F(000)=1112,Dc=1.628g·cm-3,R1=0.0359,wR2=0.0955。中心锌离子与三个乙二胺分子中的六个N原子发生配位,形成了一个畸变的八面体结构,FOX-7-阴离子并未与中心Zn2+发生配位作用,而以外界离子的形式存在于分子结构中。用非等温DSC,TG/DTG法研究了(FOX-7)2的热分解行为,其自加速分解温度和热爆炸临界温度分别为167.1℃与168.8℃。(FOX-7)2的热稳定性低于Zn(NH3)2(FOX-7)2。(FOX-7)2的撞击感度约为20.6J。

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