Fluoridation Achieved Antiperovskite Molecular Ferroelectric in [(CH3 )2 (F-CH2 CH2 )NH]3 (CdCl3 )(CdCl4 )

Journal of the American Chemical Society
Zhong-Xia WangRen-Gen Xiong

Abstract

Antiperovskites have developed to be one kind of important functional material over the past few decades, showing abundant physical properties such as negative thermal expansion and superconductivity, etc. However, antiperovskite ferroelectrics have scarcely been discovered in inorganic ceramics. In this article, we report a new organic-inorganic hybrid antiperovskite ferroelectric [(CH3)2(F-CH2CH2)NH]3(CdCl3)(CdCl4) based on the strategy of molecular design. The replacement of one methyl in [(CH3)3NH]CdCl3 with ethyl produces the lower symmetric [(CH3)2(CH2CH3)NH]CdCl3 with nonpolar perovskite structure, while the polar hexagonal antiperovskite structure with the formula of X3BA (where X = [(CH3)2(F-CH2CH2)NH]+, B = [CdCl3]-, and A = [CdCl4]2-) was received after further fluoridation of the ethyl group. Therefore, fluoridation successfully achieves the structural transformation from perovskite to antiperovskite, as well as the significant changes in physical properties from nonferroelectric to ferroelectric. The antiperovskite [(CH3)2(F-CH2CH2)NH]3(CdCl3)(CdCl4) exhibits typical ferroelectric phase transition above room temperature ( Tc = 333 K) including thermal anomalies, dielectric transitions, and second harmonic generatio...Continue Reading

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Citations

Dec 10, 2019·Advanced Materials·Yonggang WangYusheng Zhao
Oct 2, 2019·Chemistry : a European Journal·Guo-Ping LiRen-Gen Xiong
May 3, 2019·Angewandte Chemie·Yu-An XiongRen-Gen Xiong
Feb 26, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Yu-Zhen WangYi Zhang
May 18, 2021·Journal of the American Chemical Society·Zhenyue WuJunhua Luo
Jun 4, 2021·Chemical Society Reviews·Han-Yue ZhangRen-Gen Xiong
Jun 17, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Qing-Rong KongLan-Sun Zheng
Mar 12, 2020·Journal of the American Chemical Society·Lizhuang ChenYuan-Yuan Tang
Aug 19, 2020·Journal of the American Chemical Society·Hui-Yu LiuRen-Gen Xiong
Feb 25, 2020·Journal of the American Chemical Society·Ji-Xing GaoDa-Wei Fu
Oct 29, 2019·Journal of the American Chemical Society·Ping-Ping ShiRen-Gen Xiong
Nov 13, 2020·Journal of the American Chemical Society·Han-Yue ZhangRen-Gen Xiong
Oct 7, 2021·ACS Applied Materials & Interfaces·Hongxia ZhongShengjun Yuan

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