高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

Tb3+离子4f75d组态能级的电子云扩大效应

师进生1; 曲郸1; 张思远2   

  1. 1. 莱阳农学院, 青岛 266109;
    2. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:2005-08-10 修回日期:1900-01-01 出版日期:2006-07-10 发布日期:2006-07-10
  • 通讯作者: 师进生

Nephelauxetic Effect of Electronic Cloud for Energy Levels of 4f75d Configuration of Tb3+ in Crystals

SHI Jin-Sheng1*; QU Dan1; ZHANG Si-Yuan2   

  1. 1. Laiyang Agricultural College, Qingdao 266109, China;
    2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences,
    Changchun 130022, China
  • Received:2005-08-10 Revised:1900-01-01 Online:2006-07-10 Published:2006-07-10
  • Contact: SHI Jin-Sheng

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摘要： 研究了电子云扩大效应对Tb3+离子5d能级的影响. 利用光谱理论, 将电子云扩大效应比率β同Tb3+离子4f75d组态的自旋允许和禁阻跃迁能级的能级差联系起来, 通过复杂晶体化学键理论确定了化学键的共价性、 相应键体积极化率以及配体离子的有效电荷与β的线性关系, 同时得到了对β有影响并与Tb3+离子自身相关的因子.

关键词: Tb3+离子, 电子云扩大效应, 化学键, 共价性

Abstract: In this paper, the nephelauxetic effect of 5d levels of Tb3+ was considered. By using the rare-earth spectroscopy theory, the nephelauxetic effect ratio β was related to the energy difference between the spin-allowed fd and the spin-forbidden states of Tb3+ ion. By means of the chemical bond theory of complex crystals, a linear relationship between the nephelauxetic effect ratio β with the covalency, volume polarization of the chemical bond between the Tb3+ ion and the nearest anion, and charge presented by the nearest anion was obtained. In addition, a factor exhibiting the effect of Tb 3+ ion on β was presented.

Key words: Tb3+ ion, Nephelauxetic effect of electronic cloud, Chemical bond, Covalency

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