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Updated: Jan 6, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
A five- and six-coordinated two-dimensional metal halide organic-inorganic phase transition material
Hui-Ping Chen1, Zhen-Yu Wang1, Jun-Chao Qi1
1Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People's Republic of China. liaowq@ncu.edu.cn.
Abstract:
Two-dimensional organic-inorganic hybrid metal halides (2D OIHMHs) have attracted extensive attention due to their diverse functionalities, but most of them form layered structures with only six-coordinate geometry. Herein, we report a novel 2D OIHMH phase transition material, (N,N'-diisopropylethylammonium) tricadmium heptachloride, which contains Cd2+ ions with both five- and six-coordinate configurations, forming a rarely seen 2D structure. In addition, it exhibits an isostructural phase transition at 263 K and a large optical bandgap of 5.53 eV.
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