A new organic–inorganic perovskite-type compound [(CH3)3PCH2OH][CdBr3] exhibits a ferroelastic phase transition at 339 K. Domain structures were observed and analyzed. The origin of the phase transition can be attributed to the motion or reorientation of the [(CH3)3PCH2OH]+ cations and the displacement of Cd2+ and Br− ions in solid-state crystals.
![Graphical abstract: [(CH3)3PCH2OH][CdBr3] is a perovskite-type ferroelastic compound above room temperature](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C7CC01771E&imageInfo.ImageIdentifier.Year=2017)
X. Zheng, L. Zhou, P. Shi, F. Geng, D. Fu and Q. Ye, Chem. Commun., 2017, 53, 7756 DOI: 10.1039/C7CC01771E
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