Tb^（3＋）离子的荧光光谱与其晶体场点对称性的对应关系

THE RELATION BETWEEN Tb￣(3+) ION FLUORESCENCE SPECTRA AND ITS LIGAND FIELD SYMETRY IN 32 POINT GROUP

本文用量子力学和群论方法，讨论了镧系离子ｆ８电子构型的荧光光谱与其所处的晶体场对称性的对应关系，并以苯甲酸单晶的低温精细光谱为例讨论其近邻配位结构，为用荧光光谱研究ｆ８电子构型的镧系离子近邻配位结构提供参考．

ccording to Judd-Ofelt principle and ligand field theory, the allowing number ofelectric and magnetic dipole transition from the lowest excited state to the ground states(5D4-7Fj) for for f8 electron configuration in 32 point group are calculated and listed by usinggroup theory. Investigation of the high-resolution-emission spectra of the single crystalTbBenH4-H2O at 10K shows that the coordination symmetry of Tb3- in this complex isvery low. This result is consistent with the X-ray structure analysis. This set of calculated data would be available in studying the coordination symmetry of Tb3+ by determidetermination of fluorescence spectra.