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Reversible Phase Transition, Switchable Second‐Order Nonlinear Optical and Dielectric Properties in a Bismuth(III)‐Based Compound: (R)‐3‐(Fluoropyrrolidinium) 2 BiBr 5
Author(s) -
Wang BiQin,
Li Yan,
Xie Hao
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000064
Subject(s) - chemistry , phase transition , zigzag , dielectric , crystallography , crystal structure , second harmonic generation , bismuth , octahedron , condensed matter physics , optoelectronics , optics , organic chemistry , materials science , laser , physics , geometry , mathematics
A new Bi(III)‐based hybrid organic‐inorganic compound, (R)‐3‐(fluoropyrrolidinium) 2 BiBr 5 ( 1 ), has been synthesized by solution evaporation. It undergoes a drastic reversible phase transition that appears above the room temperature centered at 407 K, exhibiting a recognizable second‐order nonlinear optical response and noteworthy dielectric anomaly. Variable‐temperature single‐crystal structural analyses exhibit its structure consists of one‐dimensional zigzag chains of [BiBr 5 ] ∞ containing cis‐connected anionic octahedra and (R)‐3‐(Fluoropyrrolidinium) cations. We speculate, the existence of phase transition properties of 1 triggered by thermal stimulus probably originates from the deformation of anions and order‐disorder transition of the cations in the crystal lattice. All of those findings will provide a new way to design and fabricate of hybrid organic‐inorganic multifunctional stimuli‐responsive materials.