A New 1-D Chain ofγ-Hg_(3)S_(2)Br_(2)Constructed from Hg_(4)S_(4)Squares:Solid-state Synthesis,Structure and Optical Properties  

作　　者：DIAO Jian-Feng XIE Zhi-Xin LI Pei-Xin GUO Guo-Cong 刁剑锋;谢芷忻;李培欣;郭国聪(College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China;State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;Department of Chemistry,Faculty of Arts and Science,University of Toronto,Toronto,Ontario M5S3H6,Canada)

机构地区：[1]College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China [2]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China [3]Department of Chemistry,Faculty of Arts and Science,University of Toronto,Toronto,Ontario M5S3H6,Canada

出　　处：《Chinese Journal of Structural Chemistry》2021年第2期264-269,148,共7页结构化学（英文）

基　　金：Supported by the NSF of China (21871264);the NSF of Fujian Province (2018J01028, 2018J05034)

摘　　要：A new metal chalcogenide,γ-Hg_(3)S_(2)Br_(2)(1),has been prepared by moderate-temperature solid-state reaction,and its crystal structure was determined by single-crystal X-ray diffraction analysis.Compound 1 crystallizes in space group Cmmm of orthorhombic system with a=9.1923(18),b=18.2262(5),c=4.6251(7)Å,V=774.9(3)Å^(3)and Z=4.In the structure,two Hg(1),two Hg(2)and four S(1)atoms form a near square Hg_(4)S_(4),and such squares are linked by Hg(3)atoms nearly linearly coordinated to two S1 atoms of two parallel Hg_(4)S_(4)squares to form one-dimensional infinite Hg_(6)S_(4)chains along c direction.Optical absorption spectra reveal the presence of sharp optical gap of 2.80 eV for 1.IR spectrum,TGA and electric resistivity have been investigated.

关 键 词：crystal structure metal chalcogenides resistance semiconductor solid-state reaction 

分 类 号：O641[理学—物理化学]