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| Synthesis, Structure and Dielectric Properties of Cyanide Cobalt(Ⅲ) Hydrogen-Bonding Cage-like Supramolecular Crystal |
| Author Name | Affiliation | E-mail | | ZHENG Xiao-Yuan | Chemical Engineering College, Xinjiang Agricultural University, Urumqi 830052, China | | | LIU Yang | Chemical Engineering College, Xinjiang Agricultural University, Urumqi 830052, China | liuyangxj85@163.com | | QIN Liu-Lei | Chemical Engineering College, Xinjiang Agricultural University, Urumqi 830052, China | | | YU Fei-Fan | Chemical Engineering College, Xinjiang Agricultural University, Urumqi 830052, China | | | ZHU Chun-Li | Chemical Engineering College, Xinjiang Agricultural University, Urumqi 830052, China | | | LIU Zun-Qi | Chemical Engineering College, Xinjiang Agricultural University, Urumqi 830052, China | zunqi85@163.com |
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| Abstract: Using o-chloroaniline(o-CA), 18-crown-6 and cobalt cyanide as reactant, a small-molecule metal complex (H)0.5(o-CAH)[Co(CN)6]0.5·(18-crown-6)0.5·H2O (1) was synthesized by evaporation in the mixed solution of methanol and water. The structure and electrical properties of 1 were characterized by single crystal X-ray diffraction, infrared spectroscopy, thermogravimetric analysis (TG) and dielectric measurements. The results showed that 1 crystalizes in the triclinic system with the space group P1 at low-temperature (100 K). The cell parameters are as follows:a=0.869 22(1) nm, b=0.964 09(12) nm, c=1.129 93(14) nm, α=77.894 0(10)°, β=78.877 0(10)°, γ=88.684 0(10)°. Single crystal X-ray diffraction show a three-dimensional cage-like structure through hydrogen bonds of cyanide cobalt, supramolecular cations and water molecules. When the temperature changed, the space between the cobalt atoms of the cage-like vertex showed significant stretching deformation, which resulted in the distinct dielectric anomaly observed around 260 K. |
| Keywords: crystal structure hydrogen bond metal organic dielectric property |
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| ZHENG Xiao-Yuan,LIU Yang,QIN Liu-Lei,YU Fei-Fan,ZHU Chun-Li,LIU Zun-Qi.Synthesis, Structure and Dielectric Properties of Cyanide Cobalt(Ⅲ) Hydrogen-Bonding Cage-like Supramolecular Crystal[J].Chinese Journal of Inorganic Chemistry,2019,35(2):277-284. |
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