报告题目 (Title)：Structure and Chemistry of Bismuth-based Mixed-anion Compounds
报告人 (Speaker)： 钟承超 助理教授（日本立命馆大学）
报告时间 (Time)：2023年3月16日(周四) 14:00
报告地点 (Place)：校本部E608
邀请人(Inviter)：唐亚
主办部门：理学院化学系
报告摘要：Engineering the local structure of inorganic compounds can lead to novel crystal structures and physical and chemical properties. For local structure engineering, stereochemically active lone pair electrons (LPEs) of p-block cations, such as 6s2 electrons in Bi3+, can act as ‘chemical scissors’ to tailor the local structures. From the perspective of anions, the anisotropic anion environment in mixed anionic compounds is a good way to adjust the local structure. Bismuth-based mixed-anion compounds, which combine these two strategies for local structures engineering, show rich structural chemistry. This lecture will describe the unique structure and specific properties of three bismuth-based mixed-anion compounds: (1) Bi4NbO8Br with newly found lone-pair-induced polarizations. (2) Bi4AO6Cl2 (A = Ba, Sr, Ca) with double/triple fluorite layers for visible-light-responsive water splitting. (3) BiSF with distorted PbFCl-type structure synthesized under high pressure.
