Structural Characteristic of AREI_3 Compounds

• 作 者: 王世华 赵新华 周善元
• 机 构: Department of Chemistry Beijing Normal University,Beijing 100875,China,Department of Chemistry,Beiji
• 出 处: Journal of Rare Earths
• 发表日期: 1993年02期
• 关键词: halide divalent anion alkali ternary orthorhombic symmetry charges explained enl

The structure of AREI_3 is reported in this paper.Their crystal structures,which includeAREI_3(A=K,Rb,Cs;RE=Sm,Eu,Yb,Tm) were determined by X-ray powder diffraction method,Gui-nier technique was used.CsEuI_3 was investigated by electron microscopy to confirm the polytype ofAREI_3(SrCeO_3-type,Pmmm) observed in the X-ray diffraction experiments.The values as a function of structure type show that the structure of AREI_3 are different from that ofother halides of AREX_3(X=F,Cl,Br)

The structure of AREI_3 is reported in this paper.Their crystal structures, which includeAREI_3 (A = K, Rb, Cs; RE = Sm, Eu, Yb, Tm) were determined by X-ray powder diffraction method, Gui-nier technique was used.CsEuI_3 was investigated by electron microscopy to confirm the polytype ofAREI_3 (SrCeO_3-type, Pmmm) observed in the X-ray diffraction experiments. The values ​​as a function of structure type show that the structure of AREI_3 are different from that of other halides of AREX_3 (X = F, Cl, Br)