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作 者:袁志锋[1] 张钰[2] 高哲[2] 徐抗震[2] 宋纪蓉[2] 赵凤起[1]
机构地区:[1]西安近代化学研究所,陕西西安710065 [2]西北大学化工学院,陕西西安710069
出 处:《含能材料》2014年第4期436-440,共5页Chinese Journal of Energetic Materials
基 金:National Natural Science Foundation of China(21241003 and 20803058);Education Committee Foundation of Shaanxi Province(2013JK0697)
摘 要:合成了一种新型含能锌配合物[Zn(en)3](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Zn2+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[Zn(en)3](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℃。[Zn(en)3](FOX-7)2的热稳定性低于Zn(NH3)2(FOX-7)2。[Zn(en)3](FOX-7)2的撞击感度约为20.6J。A new energetic Zn-FOX-7 complex [Zn(en)'3 ] (FOX-7)2 was firstly synthesized and characterized by X-ray diffraction (FOX-7, 1,1-diamino-2,2-dinitroethylene). The crystal is monoclinic, space group C2/c with crystal parameters of 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=1.194 mm^-1, F(000)=1112, Dc=1.628 g. cm-3, R1 =0.0359, wR2= 0.0955. Thermal decomposition of IZn(en)31(FOX-7)2 was studied by differentia[ scanning calorimetry and thermogravimetry methods. Results show that central Zn^2+ ion is coordinated by six N atoms from three ethylenediamine molecules, which form a distorted octahedral structure, and while FOX-7+ anion has no coordination with central Zn^2+ ion. The self-accelerating decomposition temperature and critical temperature of thermal explo- sion of [Zn(en)3 ] (FOX-7)2 are t67.1℃ and 168.8 ℃, respectively.[Zn(en)3] (FOX-7)2 exhibits lower thermal stability than Zn(NH3)2(FOx-7)2. The impact sensitivity of [Zn (en) 3] (FOX-7) 2 is about 20.6 J.
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