Crystal structure and electrical conduction of the organic-inorganic compound (C6H9N2)(2)ZnI4
Crystal structure and electrical conduction of the organic-inorganic compound (C6H9N2)(2)ZnI4
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有机-无机化合物(C6H9N2)(2)ZnI4的晶体结构和电导率
DOI：
10.1016/j.poly.2019.02.029
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发表时间：
2019
期刊：
影响因子：
2.6
通讯作者：
Zou Zhengguang
中科院分区：
文献类型：
--
作者：
Mao Wenhui;Wang Jilin;Liao Hejie;Zhou Bing;Zheng Guoyuan;Mo Shuyi;Long Fei;Zou Zhengguang
采用缓慢蒸发法在室温下合成了有机-无机杂化化合物（C6 H9 N2）2 ZnI 4。单晶X射线衍射结果表明，（C6 H9 N2）2 ZnI 4晶体为单斜晶系，空间群为P21/c。该化合物具有典型的零维（0 D）结构，由两个[C6 H9 N2]+阳离子和一个[ZnI 4] 2-阴离子四面体组成.该样品在260° C以下具有较好的热稳定性，禁带宽度约为3.33eV，与理论值一致。在308.15 ~ 333.15 K温度范围内，采用209 Hz ~ 5 MHz频率下的阻抗谱对样品的电学性能进行了表征。用Jonscher定律讨论了该化合物的交流电导率：σ f= σ dc+ Afs，并将其电导归因于相关势垒跳跃（CBH）模型.因此，这类有机-无机杂化化合物在光学和电子学应用方面具有广阔的应用前景。
The organic–inorganic hybrid compound (C 6 H 9 N 2) 2 ZnI 4 was prepared by the slow evaporation method at room temperature. The single crystal X-ray diffraction results indicated that the (C 6 H 9 N 2) 2 ZnI 4 crystal was a monoclinic system with the space group P2 1/c at room temperature. The compound displayed typical Zero-dimensional (0D) consists of two [C 6 H 9 N 2]+ cation and one anionic tetrahedral [ZnI 4] 2−. The sample presented relatively perfect thermal stability up to 260° C and wide band gap about 3.33 eV which was consistent with the theoretical value. Furthermore, the electrical properties were characterized by impedance spectroscopy with the 209 Hz–5 MHz frequency from 308.15 K to 333.15 K. The alternating current (AC) conductivity of the compound was discussed using Jonscher’s law: σ f= σ dc+ A f s and the conduction could be attributed to the correlated barrier hopping (CBH) model. Therefore, this kind of organic–inorganic hybrid compound will be a promising candidate for optical and electronic applications.