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Fluorescence Spectra of Homogeneous and Mixed Europium Complexes
Volume 22, Number 5 (Oct. 1968) Page 513-519
Filipescu, Nicolae; Moorjani, K.; McAvoy, N.; Bjorklund, S.; Hurt, C.R.; Zumoff, J.
High-resolution emission spectra of several europium complexes with β-diketones, dipyridyl, and phenanthroline have been examined at 77°K in microcrystals. The Stark splitting of the 7F levels in the ground multiplet and the relative intensities of the individual 5D0→7F transitions can be used for theoretical correlation with the ligand field parameters, transition probabilities, molecular structure, and Eu-ligand bonding. The fluorescence spectra of the bis-aqua, tris, tris-aqua, tetrakis, and mixed chelates with the bidentate ligands are discussed in relation to molecular configuration.