摘要
A new quaternary thiophosphate Rb_2FeP_2S_6 was synthesized by the alkali metal halide flux method.The compound crystallizes in the monoclinic space group P2_1/c（No.14） with a = 6.042（3）,b = 12.338（6）,c = 9.045（4） ？,b = 124.25（2）°,V = 557.3（5） ？~3 and Z = 2.Its structure features 1-D infinite _∞~1[FeP_2S_6]^（2-） chains and counter cations Rb~＋.It shows a band gap of 2.03 eV.The nearest intra-chain Fe^（2＋） cations are antiferromagnetically coupled with each other,and there are weak ferromagnetic-like interactions between neighboring _∞1[FeP_2S_6]（2-） chains,resulting in two successive magnetic phase transitions.
A new quaternary thiophosphate Rb_2FeP_2S_6 was synthesized by the alkali metal halide flux method.The compound crystallizes in the monoclinic space group P2_1/c（No.14） with a = 6.042（3）,b = 12.338（6）,c = 9.045（4） ？,b = 124.25（2）°,V = 557.3（5） ？~3 and Z = 2.Its structure features 1-D infinite _∞~1[FeP_2S_6]^（2-） chains and counter cations Rb~＋.It shows a band gap of 2.03 eV.The nearest intra-chain Fe^（2＋） cations are antiferromagnetically coupled with each other,and there are weak ferromagnetic-like interactions between neighboring _∞1[FeP_2S_6]（2-） chains,resulting in two successive magnetic phase transitions.
作者
苏永菲
姜小明
曾卉一
刘彬文
林杨捷
郭国聪
SU Yong-Fei, LIU Bin-Wen,JIANG Xiao-Ming, ZENG Hui-Yi,LIN Yang-Jie,GUO Guo-Cong,(State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China)
基金
the financial support by the NSF of China(21701176)
the National Postdoctoral Program for Innovative Talents(BX201600163)
the China Postdoctoral Science Foundation(2016M600510)
