Department of Physics, Memari College, Memari, Burdwan 713146, West Bengal, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Jan;78(1):59-63. doi: 10.1016/j.saa.2010.08.060.
The Raman and infrared spectra of some rare earth (dysprosium and terbium) trifluoromethanesulfonates crystals have been analyzed. Different vibrational frequencies of trifluoromethanesulfonate ions (CF3SO3-) are identified and assigned to different vibrations of the SO3 and CF3 groups. Electronic transitions of R3+ ions (R=Dy, Tb) in these salts have been assigned to transitions from the ground to different energy levels of the ground multiplet. The electronic energy levels of the rare earth ions are also determined theoretically with the help of single electron crystal field theory. They are found to yield results not only in good agreement with the observed spectral data but also in good conformity with those obtained previously from magnetic measurements.
分析了一些稀土（镝和铽）三氟甲磺酸酯晶体的拉曼和红外光谱。鉴定了三氟甲磺酸根离子（CF3SO3-）的不同振动频率，并将其分配给 SO3 和 CF3 基团的不同振动。这些盐中 R3+离子（R=Dy，Tb）的电子跃迁被分配到从基态到基态多重态不同能级的跃迁。借助单电子晶场理论，还从理论上确定了稀土离子的电子能级。结果不仅与观察到的光谱数据非常吻合，而且与以前从磁测量中获得的结果非常一致。
