Xu Yuangang, Wang Pengcheng, Lin Qiuhan, Lu Ming
School of Chemical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing, Jiangsu, China.
Dalton Trans. 2017 Oct 24;46(41):14088-14093. doi: 10.1039/c7dt03231e.
A carbon-free inorganic-metal complex [Zn(HO)(N)]·4HO was synthesized by the ion metathesis of [Na(HO)(N)]·2HO solution with Zn(NO)·6HO. The complex was well characterized by IR and Raman spectroscopy, elemental analysis (EA), powder X-ray diffraction (PXRD), and differential scanning calorimetry (DSC). The structure of the complex was confirmed by single-crystal X-ray crystallography and a Zn(ii) ion is coordinated in a quadrilateral bipyramid environment in which the axial position is formed by two nitrogen atoms (N1) from two pentazolate rings (cyclo-N) and the equatorial plane is formed by four oxygen atoms (O1) from four coordinated water molecules. The thermal analysis of [Zn(HO)(N)]·4HO reveals that although water plays an important role in stabilizing cyclo-N, dehydration does not cause immediate decomposition of the anion. However, cyclo-N decomposed into N and N gas at 107.9 °C (onset). Based on its chemical compatibility and stability, the complex exhibits promising potential as a modern environmentally-friendly energetic material.
通过[Na(HO)(N)]·2HO溶液与Zn(NO)·6HO的离子复分解反应合成了一种无碳无机金属配合物[Zn(HO)(N)]·4HO。该配合物通过红外光谱和拉曼光谱、元素分析（EA）、粉末X射线衍射（PXRD）和差示扫描量热法（DSC）进行了充分表征。配合物的结构通过单晶X射线晶体学得到证实，一个Zn(ii)离子在四边形双锥环境中配位，其中轴向位置由来自两个五唑环（环-N）的两个氮原子（N1）形成，赤道平面由来自四个配位水分子的四个氧原子（O1）形成。[Zn(HO)(N)]·4HO的热分析表明，虽然水在稳定环-N方面起着重要作用，但脱水不会导致阴离子立即分解。然而，环-N在107.9°C（起始温度）分解为N和N气体。基于其化学相容性和稳定性，该配合物作为一种现代环保含能材料具有广阔的应用前景。
