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High switchable dielectric phase transition originating from distortion in inorganic–organic hybrid materials (H2dabco-C2H5) [MIICl4] (M = Co, Zn)†
Dalton Transactions ( IF 3.5 ) Pub Date : 2018-03-19 00:00:00 , DOI: 10.1039/c8dt00623g Qin Ji 1, 2, 3, 4 , Linhai Li 1, 2, 3, 4 , Siyu Deng 1, 2, 3, 4 , Xingxing Cao 1, 2, 3, 4 , Lizhuang Chen 1, 2, 3, 4
Dalton Transactions ( IF 3.5 ) Pub Date : 2018-03-19 00:00:00 , DOI: 10.1039/c8dt00623g Qin Ji 1, 2, 3, 4 , Linhai Li 1, 2, 3, 4 , Siyu Deng 1, 2, 3, 4 , Xingxing Cao 1, 2, 3, 4 , Lizhuang Chen 1, 2, 3, 4
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Two phase transition materials (H2dabco-C2H5)[ZnCl4] and (H2dabco-C2H5)[CoCl4] were synthesized and characterized. Differential scanning calorimetry detected that the two compounds underwent reversible phase transitions at 245 K and 261 K, respectively. The temperature dependence of the dielectric measurements also confirmed the phase transition. Variable-temperature single-crystal X-ray diffraction suggested that the two compounds underwent the same phase transitions from the space group Pnma to P21/c but at different temperatures. Symmetry breaking occurred with an Aizu notation of mmmF2/m. The structural phase transitions of 1 and 2 were ascribed to the distortion of a [H2dabco-C2H5]2+ cation from inorganic–organic hybrid materials (H2dabco-C2H5)[MIICl4] (M = Zn, Co). The strong variations of dielectric anomaly made compounds 1 and 2 applicable for use in promising switchable dielectric materials.
中文翻译：
源自无机-有机杂化材料（H 2 dabco-C 2 H 5）[M II Cl 4 ]（M = Co，Zn）的变形引起的高可切换介电相变†
合成并表征了两种相变材料（H 2 dabco-C 2 H 5）[ZnCl 4 ]和（H 2 dabco-C 2 H 5）[CoCl 4 ]。差示扫描量热法检测到两种化合物分别在245 K和261 K处经历可逆相变。电介质测量值的温度依赖性也证实了相变。可变温度单晶X射线衍射表明，这两种化合物从空间群Pnma到P 2 1 / c经历相同的相变但温度不同。对称破坏发生，Aizu符号为mmmF 2 / m。1和2的结构相变归因于无机-有机杂化材料（H 2 dabco-C 2 H 5）[M II Cl 4 ]引起的[H 2 dabco-C 2 H 5 ] 2+阳离子的变形。（M ＝ Zn，Co）。介电异常的强烈变化使化合物1和2适用于有前途的可切换介电材料。
更新日期：2018-03-19
中文翻译：
源自无机-有机杂化材料（H 2 dabco-C 2 H 5）[M II Cl 4 ]（M = Co，Zn）的变形引起的高可切换介电相变†
合成并表征了两种相变材料（H 2 dabco-C 2 H 5）[ZnCl 4 ]和（H 2 dabco-C 2 H 5）[CoCl 4 ]。差示扫描量热法检测到两种化合物分别在245 K和261 K处经历可逆相变。电介质测量值的温度依赖性也证实了相变。可变温度单晶X射线衍射表明，这两种化合物从空间群Pnma到P 2 1 / c经历相同的相变但温度不同。对称破坏发生，Aizu符号为mmmF 2 / m。1和2的结构相变归因于无机-有机杂化材料（H 2 dabco-C 2 H 5）[M II Cl 4 ]引起的[H 2 dabco-C 2 H 5 ] 2+阳离子的变形。（M ＝ Zn，Co）。介电异常的强烈变化使化合物1和2适用于有前途的可切换介电材料。
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