Infrared Spectra of Tetrakis(tropolonato) Lanthanide(III) Chelates: Evidence for Crystal Field Effects

Authors

  • L.G. Hulett Department of Physiology and Medical Biochemistry and Department of Chemistry, University of Cape Town (South Africa)
  • D.A. Thornton Department of Physiology and Medical Biochemistry and Department of Chemistry, University of Cape Town (South Africa)

DOI:

https://doi.org/10.2533/chimia.1972.72

Abstract

The infrared spectra of the fourteen complex ions [LnT4]- (Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb, Lu; T = tropolonate anion) have been determined. One band within the range 480 to 510 cm-1 is found to be significantly metal-sensitive and is accordingly assigned to the metal-oxygen stretching frequency,  ν Ln-O. This assignment is supported by comparison with the spectra of [CuT2] and [ScT3]. ν Ln-O exhibits the double-bumped relationship with 4f-orbital population (with minima at 4f0, 4f7 and 4f14) which is expected in the presence of crystal field stabilization. 

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Published

1972-02-28

Issue

Vol. 26 No. 2 (1972): Forschung/Research

Section

Kurze Mitteilungen

License

Copyright (c) 1972 L.G. Gulett

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
L. Hulett, D. Thornton, Chimia 1972, 26, 72, DOI: 10.2533/chimia.1972.72.