LOWEST EXCITED TRIPLET-STATES IN [RU(BPY)(3)](2- A COMPARATIVE-STUDY BASED ON HIGHLY RESOLVED SPECTRA() AND [RH(BPY)(3)](3+) )

Citation
W. Humbs et al., LOWEST EXCITED TRIPLET-STATES IN [RU(BPY)(3)](2- A COMPARATIVE-STUDY BASED ON HIGHLY RESOLVED SPECTRA() AND [RH(BPY)(3)](3+) ), Journal of luminescence, 72-4, 1997, pp. 677-678
Citations number
5
Categorie Soggetti
Optics
Journal title
ISSN journal
00222313
Volume
72-4
Year of publication
1997
Pages
677 - 678
Database
ISI
SICI code
0022-2313(1997)72-4:<677:LETI[A>2.0.ZU;2-F
Abstract
The lowest excited states of [Ru(bpy)(3)](2+) (bpy: 2,2'-bipyridine) e xhibit a very strong involvement of metal 4d orbitals, while the metal character is extremely small in the states of [Rh(bpy)(3)](3+). This contrasting behavior is clearly displayed in the emission and excitati on spectra, when ligands are isotopically marked. It is demonstrated t hat these states, being of metal-to-ligand charge transfer character ( (MLCT)-M-3) in Ru(II) compounds, are covalentely delocalized over the metal and the different ligands, while the ground and the lowest excit ed states of Rh(III) compounds being of (3) pi pi character are cente red on individual ligands.