Related Experiment Video
Updated: May 11, 2026

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
Revisiting the spectroscopy of the Bi3+ ion in oxide compounds
1Clermont Université, ENSCCF, BP 10448, F-63000 Clermont-Ferrand, France. Philippe.Boutinaud@ensccf.fr
Abstract:
A model is introduced to predict the energy of metal-to-metal charge-transfer transitions in oxide compounds containing Bi(3+) ions and d(0) or d(10) metals (M(n+)). The model takes into account the structural characteristics of the host lattices, the anion relaxation resulting from Bi(3+) doping, and the electronegativities and coordination numbers of the Bi(3+) and M(n+) ions in the compounds. It is shown, through a critical review of the archival literature, that this model provides new insights on the assignment of the luminescence spectra and the related interpretation of the spectroscopic behaviors.
Related Concept Videos
UV–Vis Spectroscopy: Molecular Electronic Transitions
Molecular Spectroscopy: Absorption and Emission
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent of conjugation in the...
Valence Bond Theory
UV–Vis Spectroscopy: Woodward–Fieser Rules

