Syntheses,structures and properties of five chiral quaternary sulfides,AlxLn_3(Si_yAl_(1-γ))S_7 (Ln=Y,Gd,Dy) and In_(0.33)Sm_3SiS_7  

作　　者：GUO ShengPing, GUO GuoCong & HUANG JinShun State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China 

出　　处：《Science China Chemistry》2009年第10期1609-1615,共7页中国科学（化学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 20701037);973 Program (Grant No. 2009CB939801);the Key Project from the Chinese Academy of Sciences (Grant Nos. KJCX2.YW.M10 and KJCX2.YW.319);the Natural Science Foundation of Fujian Province (Grant No. 2006L2005)

摘　　要：Five new quaternary isostructural rare-earth sulfides, Al0.57Gd3(Si0.27Al0.73)S7 (1), Al0.55Dy3(Si0.34Al0.66)S7 (2), Al0.50Y3(Si0.50Al0.50)S7 (3), Al0.44Gd3(Si0.70Al0.30)S7 (4) and In0.33Sm3SiS7 (5), have been synthesized by facile solid-state reactions. They crystallize in the 3-D ALn3EQ7 structure type in the hexagonal chiral space group P63. The structures feature a 3-D host framework constructed by Ln-S bicapped trigonal prisms, in which the octahedral and tetrahedral interspaces are occupied by A and E atoms, respectively. The investigation of optical and magnetic properties of 4 indicates that it is a semiconductor and behaves antiferromagnetic-like interaction.Five new quaternary isostructural rare-earth sulfides, Al0.57Gd3(Si0.27Al0.73)S7 (1), Al0.55Dy3(Si0.34Al0.66)S7 (2), Al0.50Y3(Si0.50Al0.50)S7 (3), Al0.44Gd3(Si0.70Al0.30)S7 (4) and In0.33Sm3SiS7 (5), have been synthesized by facile solid-state reactions. They crystallize in the 3-D ALn3EQ7 structure type in the hexagonal chiral space group P63. The structures feature a 3-D host framework constructed by Ln-S bicapped trigonal prisms, in which the octahedral and tetrahedral interspaces are occupied by A and E atoms, respectively. The investigation of optical and magnetic properties of 4 indicates that it is a semiconductor and behaves antiferromagnetic-like interaction.

关 键 词：SULFIDE RARE-EARTH SOLID-STATE reaction crystal structure magnetic property 

分 类 号：O611.3[理学—无机化学]