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. 2025 Sep 29.
doi: 10.1039/d5cc04326c. Online ahead of print.

A five- and six-coordinated two-dimensional metal halide organic-inorganic phase transition material

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A five- and six-coordinated two-dimensional metal halide organic-inorganic phase transition material

Hui-Ping Chen et al. Chem Commun (Camb). .

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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