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Reversible phase transition, switchable dielectric response in In(III)‐based organic–inorganic hybrid compound: [C 3 H 8 N] 3 InBr 6
Author(s) -
Zhang YinQiang,
Li Min,
Xu GuanCheng
Publication year - 2021
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.6354
Subject(s) - monoclinic crystal system , chemistry , phase transition , dielectric , crystallography , phase (matter) , hybrid material , space group , x ray crystallography , crystal structure , diffraction , organic chemistry , materials science , condensed matter physics , optics , optoelectronics , physics
Cyclic organic ammoniums have been regarded as the suitable organic components for constructing the organic–inorganic hybrid phase transition materials because they have flexible cyclic structure. Here, an In‐based organic–inorganic hybrid compound, [C 3 H 8 N] 3 InBr 6 ( 1 ; C 3 H 8 N + is cyclopropylammonium), has been successfully synthesized. It is noteworthy that 1 experiences an invertible phase transition at 298 K ( T c ), as certified by DSC measurement. Moreover, single‐crystal X‐ray diffraction determines that 1 crystallized in the monoclinic space group C 2/ m at 330 K and in the monoclinic space group C 2/ c at 240 K. Further analyses indicate that the structural phase transition is ascribed to the disorder–order changes of the cyclopropylammonium cations. And an obvious step‐like dielectric anomaly in the vicinity of the T c is detected. This work will pave the way to the exploration and design of In‐based organic–inorganic hybrid phase transition materials.