A hydrogen-bonded three-dimensional network organic-inorganic hybrid manganese complex [HDABCO-CH2Cl]·MnBr4(1) was obtained with [DABCO-CH2Cl]+·Cl-,MnCl2·4H2O and hydrobromic acid as raw materials in a mixed solution of methanol and water by slow evaporation method at room temperature.The structure,thermal and electrical properties of the crystalline material were analyzed and tested by single crystal X-ray diffraction,the Fourier transform infrared spectroscopy (FT-IR),powder X-ray diffraction,thermogravimetric analysis (TG),and variable temperature-frequency dielectric constant test.The single crystal structure analysis showed that the synthesized compound belonged to monoclinic crystal system with space group P21/n,in which [HDABCO-CH2Cl]2+ cations and [MnBr4]2- tetrahedral anions formed a three-dimensional network structure through hydrogen bonding interactions inside the crystal.With the change of temperature,the [HDABCO-CH2Cl]2+ cation twisted and the [MnBr4]2- tetrahedral anion produced a stretching deformation,causing a significant reversible dielectric anomaly in the crystal in the temperature range of 240～270K.
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基金资助
新疆农业大学院级研究生科研创新项目(XJ2023001);新疆农业大学大学生创新项目(dxscx2023463);新疆维吾尔自治区自然科学基金面上项目(2022D01A76);新疆维吾尔自治区重点研发专项(20220264-3);新疆农业化学与生物材料重点实验室开放课题基金(KF202206);国家自然科学基金(21561030);新疆“天山英才”计划项目(2223RSTTSYC)
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