Syntheses and Single-crystal Structures of Ln_3Sn_(0.25)GeS_7 (Ln=La,Sm)  

作　　者：赵中燕 刘彬文 曾卉一 姜小明 张明建 郑发鲲 郭国聪 

机构地区：[1]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences [2]Graduate University,Chinese Academy of Sciences

出　　处：《Chinese Journal of Structural Chemistry》2012年第8期1135-1139,共5页结构化学（英文）

基　　金：Supported by the NNSF of China (20821061);Key Project from the CAS (KJCX2-YW-M10,KJCX2-EW-H03);the 973 Program (2009CB939801)

摘　　要：Two new quaternary sulfides,La3Sn0.25GeS71 and Sm3 Sn0.25GeS72,have been synthesized by a facile solid-state reaction,and their crystal structures were determined by singlecrystal X-ray diffraction analysis.The two compounds crystallize in the P6 3 space group,and the crystal data are as follows-La3Sn0.25GeS7：a=10.3335（7）,c=5.8455（7）,Z=2;Sm3Sn0.25GeS7：a=9.999（3）,c=5.787（2）,Z=2.Single-crystal analysis indicated that the two compounds consist of three types of building blocks：LnS 8 anti-tetragonal prism,SnS 6 octahedron,and GeS 4 tetrahedron.Two new quaternary sulfides,La3Sn0.25GeS71 and Sm3 Sn0.25GeS72,have been synthesized by a facile solid-state reaction,and their crystal structures were determined by singlecrystal X-ray diffraction analysis.The two compounds crystallize in the P6 3 space group,and the crystal data are as follows-La3Sn0.25GeS7：a=10.3335（7）,c=5.8455（7）,Z=2;Sm3Sn0.25GeS7：a=9.999（3）,c=5.787（2）,Z=2.Single-crystal analysis indicated that the two compounds consist of three types of building blocks：LnS 8 anti-tetragonal prism,SnS 6 octahedron,and GeS 4 tetrahedron.

关 键 词：RARE-EARTH NON-CENTROSYMMETRIC crystal structure SULFIDE 

分 类 号：O614.3[理学—无机化学]