Dynamics of a caged imidazolium cation-toward understanding the order-disorder phase transition and the switchable dielectric constant

Xi Zhang; Xiu-Dan Shao; Si-Chao Li; Ying Cai; Ye-Feng Yao; Ren-Gen Xiong; Wen Zhang

doi:10.1039/c4cc08693g

Dynamics of a caged imidazolium cation-toward understanding the order-disorder phase transition and the switchable dielectric constant

Chem Commun (Camb). 2015 Mar 18;51(22):4568-71. doi: 10.1039/c4cc08693g.

Authors

Xi Zhang¹, Xiu-Dan Shao, Si-Chao Li, Ying Cai, Ye-Feng Yao, Ren-Gen Xiong, Wen Zhang

Affiliation

¹ Department of Physics & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, North Zhongshan Road 3663, Shanghai 200062, China. yfyao@phy.ecnu.edu.cn.

PMID: 25579450
DOI: 10.1039/c4cc08693g

Abstract

A molecular compass-like behaviour is found in a perovskite-type cage compound (HIm)2[KCo(CN)6] (HIm = imidazolium cation). The dynamic changes in the HIm cation from the static to rotating state along with the rearrangement of the host cage result in switchable and anisotropic dielectric constants.