Issue 7, 2022
From the journal:

Inorganic Chemistry Frontiers

Ferroelastic phase transition with large spontaneous strain caused by freezing the conformational dynamics of ammonium†

Li-Ting Li,a   Cui-Xian Ji,a   Ying-Xi Sun,a   Ya-Wei Jin,b   Guo-Hao Ni,a   Jia-Yue Sun,a   Rui-Rui Han,a   Jiong-Peng Zhao ORCID logo *a  and  Fu-Chen Liu ORCID logo *a  

* Corresponding authors

a School of Chemistry and Chemical Engineering, TKL of Organic Solar Cells and Photochemical Conversion, TKL of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, China
E-mail: zhaojp@tjut.edu.cn, fcliu@tjut.edu.cn

b Ecology and Environment Monitoring Center of Jiaxing Zhejiang Province, No. 516 Xianghe Road, Nanhu district, Jiaxing City, Zhejiang Province, P. R. China

Abstract

By adjusting the substituent group of the organic ammonium in three molecular ionic complexes, [A][Fe3O(O2CH)8(H2O)]2 (A = NH3(CH2)3NH3 for 1, CH3NH2(CH2)3NH3 for 2 and CH3CH2NH2(CH2)3NH2CH2CH3 for 3), crystallized in the 2/m point group at room temperature with similar structure, conformational transformation-caused dynamic disorder and pseudosymmetry is realized in 3. When the conformational interchange of the ammonium is frozen, the disorder–order 2/mF[1 with combining macron] ferroelastic phase transition is presented, which leads to dielectric relaxation and a large spontaneous strain of 0.207.

Graphical abstract: Ferroelastic phase transition with large spontaneous strain caused by freezing the conformational dynamics of ammonium

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Article information

DOI
https://doi.org/10.1039/D2QI00114D
Article type
Research Article
Submitted
14 Jan 2022
Accepted
06 Feb 2022
First published
08 Feb 2022

Inorg. Chem. Front., 2022,9, 1380-1385

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Ferroelastic phase transition with large spontaneous strain caused by freezing the conformational dynamics of ammonium

L. Li, C. Ji, Y. Sun, Y. Jin, G. Ni, J. Sun, R. Han, J. Zhao and F. Liu, Inorg. Chem. Front., 2022, 9, 1380 DOI: 10.1039/D2QI00114D

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