An In(III)-Based Organic-Inorganic Hybrid Compound (C3H7NH3)3[InCl5(H2O)]Cl with Dielectric Response Behavior Derived from Order-Disorder Changes of n-Propylammonium Cations

A new organic-inorganic hybrid compound (C3H7NH3)(3)[InCl5(H2O)]Cl (1; C3H7NH3+ is n-propylammonium), which exhibits a structural phase transition, has been successfully synthesized. The structural phase transition at T-c=188.9 K upon heating has been evidenced by differential scanning calorimetry (DSC) measurement. X-ray single-crystal diffraction analysis reveals that the structural phase transition is driven by order-disorder changes of n-propylammonium cations. And a gentle slope like dielectric anomaly is discovered in the vicinity of the T-c. This work will be helpful to explore the new In-based phase transition materials.

Automated summary

A new organic-inorganic hybrid compound has been successfully synthesized, showing a structural phase transition at Tc=188.9 K, driven by order-disorder changes of n-propylammonium cations. A gentle dielectric anomaly was discovered near Tc. This research will be valuable in exploring new In-based phase transition materials.