J. Phys. IV France
Volume 04, Numéro C4, Avril 19943rd International Conference Laser M2P
|Page(s)||C4-333 - C4-336|
J. Phys. IV France 04 (1994) C4-333-C4-336
Excited states of cerium (III) in various local symmetries by UV absorption and luminescence spectraC.K. JØRGENSEN
Section de Chimie, Université de Genève, 30 Quai Ansermet, 1211 Genève 4, Switzerland
Among trivalent lanthanides, cerium has the lowest-lying 5dl configuration with up to five distinct Kramers doublet energies, strongly separated by chemical bonding of the same kind as known from Re, Os, Ir, Pt complexes with ground configuration 5dq, but with more moderate spin-orbit coupling effects in Ce. Lanthanides rather indifferently show all the coordination numbers N from 6 to 12 (11 for CeF3) and elastic internuclear distances. Stokes shifts can only be superficially rationalized with one configurational coordinate out of many.
© EDP Sciences 1994