三种固态六氟化镓离子化合物的远红外光谱研究

FAR FT IR SPECTRA OF GALLIUM HEXAFLUORIDE IONS

用傅里叶变换红外光谱法研究了Ｒｂ３ＧａＦ６、室温相α－Ｃｓ３ＧａＦ６和高温相Ｃｓ３ＧａＦ６冰晶石类氟化物的远红外光谱，对它们的光谱带进行了指认，并进行了Ｘ射线衍射分析。结果表明，Ｒｂ３ＧａＦ６与高温相Ｃｓ３ＧａＦ６同属四方晶系，晶胞参数分别为ａ＝６．３２，ｃ＝８．８６和ａ＝６．８７，ｃ＝９．８７；α－Ｃｓ３ＧａＦ６属正交晶系，ａ＝１０．６２，ｂ＝９．９６，ｃ＝５．６１。

Far FT IR spectra of Rb 3GaF 6,α Cs 3GaF 6 and high temperature form Cs 3GaF 6 and their XDS have been studied in this paper The results indicated that Rb 3GaF 6 and high temperature form Cs 3GaF 6 are tetragonal,a=0 632,c=0 886nm and a=0 687,c=0 987nm respectively α Cs 3GaF 6 is orthorhombic,a=1 062,b=0 996,c=0 561nm