化合物Cs_3Dy_2Br_9合成机理的相化学研究

Studies on Phase Chemistry of Synthesizing Mechanism for Compound Cs_3Dy_2Br_9

研究了ＣｓＢｒ与ＤｙＢｒ３在氢溴酸介质中反应的四元体系ＣｓＢｒ－ＤｙＢｒ３－ＨＢｒ（１３％）－Ｈ２Ｏ（２５℃）相化学关系，发现了新物相５：３型化合物５ＣｓＢｒ·３ＤｙＢｒ３·２４Ｈ２Ｏ，并对其进行了Ｘ射线、ＤＴＧ、ＤＴＡ及偏光显微镜等方面的研究。以相关系为基础提出了化合物Ｃｓ３Ｄｙ２Ｂｒ９的合成机理。

Phase chemical relation of quaternary system CsBr-DyBr3-HBr13%)-H2O at 25℃ for CsBr and DyBr3 reaction in HBr was studied for the first time,a new kind of compound 5CsBr·3DyBr3·24H2O was found in the system.X-ray powder diffraction, thermal analysis(TG and DTA)and polarization-character of new compound obtained from the system were investigated.Meanwhile,the synthetic mechanism of compound Cs3Dy2Br9 was suggested here on the basis of phase chemical relation of the system.