Phase Transition and Dielectric Response Originating from Disorder‐Order Transition in the In‐Based Organic‐Inorganic Hybrid Material [NH₃(CH₂)₅NH₃][InCl₅(H₂O)] ⋅ H₂O

Abstract

The new organic-inorganic hybrid material [NH 3 (CH 2 ) 5 NH 3 ][InCl 5 (H 2 O)] • H 2 O (1) was successfully synthesized and the reversible phase transition with Curie temperature of 239.2 K was determined by differential scanning calorimetry (DSC) measurement. Moreover, the variable-temperature singlecrystal X-ray diffraction analyses demonstrate that the title compound crystallizes in the Pnma at 280 K. As the temperature drops below Tc, the space group of 1 transforms to the P2 1 /n. Structural analyses reveal that the disorder-order transformation of the organic [NH 3 (CH 2 ) 5 NH 3 ] 2 + cation accounts for the phase transition of compound 1. And the dielectric property shows an anomaly near Tc as well. These findings will promote the exploration and construction of the indium(III) based phase transition materials.

Tunability of Photovoltaic Functions via Halogen Substitution [(Ade)2 CdX4](X = Cl, Br): A Class of Three-Dimensional Organic–Inorganic Hybrid Materials

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Organic‐Inorganic Hybrid Crystal [1‐methylpiperidinium]2[ZnCl4] with High Tc Phase Transition and Dielectric Switches

“…In the process of phase transition, the latent heat of phase transition is absorbed or released. Among them, dielectric phase transition materials can switch the dielectric constant between low dielectric state and high dielectric state under the stimulation of external temperature, and have potential applications in the fields of information storage, sensors, signal processing and storage equipment [23–35] . In the past few years, they have received great attention and became a hotspot of multifunctional materials research.…”