3CdSO_4·8H_2O晶体的傅立叶变换拉曼光谱研究

The Raman Spectra Study of 3CdSO_4·8H_2O Crystal

研究了八水合三硫酸镉晶体在空气中受热脱水过程的傅立叶变换拉曼光谱。结果表明,受热脱水过程中硫酸根离子与镉离子之间的配位形式发生了变化。其中,硫酸根离子的2ν和ν3谱带的变化显示出在3CdSO4.8H2O转变为CdSO4.H2O的过程中,硫酸根离子与镉离子之间的配位形式从单齿配位转变为了双齿配位。

The Raman spectra of the dehydration process of cadmium sulfate（3CdSO1·8H2O） crystal and rehydration process of CdSO; were studied. The resuhs indicated that the conjunction mode between SO4^2- and Cd^2＋ changed in heating process. A new Raman mode emerged in the v2 （SO4^2-） mode region indicated the onset of the CdSO4·H2O phase.