Reversible phase transition, switchable dielectric response in In(III)-based organic–inorganic hybrid compound: [C3H8N]3InBr6,Applied Organometallic Chemistry

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Reversible phase transition, switchable dielectric response in In(III)-based organic–inorganic hybrid compound: [C3H8N]3InBr6
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2021-06-27 , DOI: 10.1002/aoc.6354
Yin‐Qiang Zhang ₁ , Min Li ₁ , Guan‐Cheng Xu ₁

Affiliation

Cyclic organic ammoniums have been regarded as the suitable organic components for constructing the organic–inorganic hybrid phase transition materials because they have flexible cyclic structure. Here, an In-based organic–inorganic hybrid compound, [C₃H₈N]₃InBr₆ (1; C₃H₈N⁺ is cyclopropylammonium), has been successfully synthesized. It is noteworthy that 1 experiences an invertible phase transition at 298 K (T_c), as certified by DSC measurement. Moreover, single-crystal X-ray diffraction determines that 1 crystallized in the monoclinic space group C2/m at 330 K and in the monoclinic space group C2/c at 240 K. Further analyses indicate that the structural phase transition is ascribed to the disorder–order changes of the cyclopropylammonium cations. And an obvious step-like dielectric anomaly in the vicinity of the T_c is detected. This work will pave the way to the exploration and design of In-based organic–inorganic hybrid phase transition materials.

中文翻译：

In(III) 基有机-无机杂化化合物中的可逆相变、可切换介电响应：[C3H8N]3InBr6

环状有机铵因其具有灵活的环状结构而被认为是构建有机-无机杂化相变材料的合适有机组分。在这里，基于In的有机-无机杂化化合物[C ₃ H ₈ N] ₃ InBr ₆ ( 1；C ₃ H ₈ N ⁺是环丙基铵)已成功合成。值得注意的是，1在 298 K ( T _c )处经历了可逆相变，这是由 DSC 测量证明的。此外，单晶 X 射线衍射确定1在 330 K的单斜空间群C 2/ m和240 K的单斜空间群C 2/ c中结晶。进一步的分析表明，结构相变归因于环丙基铵阳离子的无序变化。并且在T _c附近检测到明显的阶梯状介电异常。这项工作将为In基有机-无机杂化相变材料的探索和设计铺平道路。

更新日期：2021-06-27

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