Structure and Characterization of a Zero-Dimensional Alkali Tin Dihalides Compound Cs3Sn3F2CI7 with the [Sn2F2CI4]2- Clusters

被引：12

作者：

Gong, Pifu ^{[1
,3
]}

Luo, Siyang ^{[1
]}

Xiao, Ke ^{[2
]}

Huang, Qian ^{[1
,3
]}

Yang, Yi ^{[1
,3
]}

Huang, Hongwei ^{[2
]}

Wu, Yicheng ^{[1
]}

Chen, Chuangtian ^{[1
]}

Lin, Zheshuai ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Funct Crystals & Laser Technol, Beijing Ctr Crystal Res & Dev, Beijing 100190, Peoples R China

[2] China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

INORGANIC CHEMISTRY | 2017年 / 56卷 / 05期

关键词：

NONLINEAR-OPTICAL MATERIAL; MIXED HALIDE; ELECTRONIC-STRUCTURE; CRYSTAL-STRUCTURE; CONDUCTIVITY; SEMICONDUCTOR; PEROVSKITES; GROWTH; TIO2;

D O I：

10.1021/acs.inorgchem.7b00036

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new perovskite stoichiometric alkali tin dihalides compound, Cs3Sn3F2CI7, is synthesized by a hydrothermal method. This compound belongs to the monoclinic space group of P21/c with cell parameters of alpha = 9.5645(4) angstrom, b = 14.2057(7) angstrom, c = 13.5828(6) angstrom, and beta = 93.2450(10)degrees. Unlike the common perovskites in which octahedra are interconnected to be a three-dimensional network, Cs3Sn3F2CI7 possesses a zero -dimensional structure consisting of cs(+) cations, isolated [SnCI3](-) trigonal pyramids, and dimer structural units [Sn2F2CI4](2-); the latter microscopic unit is found for the first time. The thermal stability and UV-vis NIR diffuse reflectance spectroscopy in Cs3Sn3F2CI7 are measured, and the electronic structure is calculated. Interestingly, the 5s(2) lone-pair electrons on Sn2+ cations are stereochemically active, which results in a pretty good photocatalytic activity of the title compound.

引用

页码：3081 / 3086

页数：6

共 45 条

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