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Electronegativity, Charge Transfer, Crystal Field Strength, and the Point Charge Model Revisited
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  • 作者:Peter A. Tanner ; Lixin Ning
  • 刊名:The Journal of Physical Chemistry A
  • 出版年:2013
  • 出版时间:February 21, 2013
  • 年:2013
  • 卷:117
  • 期:7
  • 页码:1503-1507
  • 全文大小:371K
  • 年卷期:v.117,no.7(February 21, 2013)
  • ISSN:1520-5215
文摘
Although the optical spectra of LnCl63鈥?/sup> systems are complex, only two crystal field parameters, B40 and B60, are required to model the J-multiplet crystal field splittings in octahedral symmetry. It is found that these parameters exhibit R鈥? and R鈥? dependence, respectively, upon the ionic radius Ln3+(VI), but not upon the Ln鈥揅l distance. More generally, the crystal field strengths of LnX6 systems (X = Br, Cl, F, O) exhibit linear relationships with ligand electronegativity, charge transfer energy, and fractional ionic character of the Ln鈥揦 bond.

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