Isotopic effect in the vibronic spectra of europium compounds

Luminescence and crystal-field fitting of two optical isomeric complexes of europium

“…Some of these bands are clearly assigned to the vibronic structure, especially in the lesscluttered spectral regions of the 5 D 0 -7 F 2 sideband, and correspond to Raman-active modes. These conclusions are similar to those from the studies of Tsaryuk et al [20], Zolin [22], Legendziewicz et al [21].…”

Intensity of cooperative vibronic transitions in the Eu(III), Gd(III) and Tb(III) formates spectra

“…Usually vibronic lines intensity is weaker by a factor of 10-1000 than the intensity of the electronic transitions. [1][2][3][4][5] Formation of the vibronic sidebands, multiphonon nonradiative relaxation, phonon-assisted energy transfer, and line broadening effects depend on interaction of the lanthanide 4f-electrons with their surroundings (electron-phonon or vibronic coupling). The vibrational structure of electronic transitions of lanthanide complexes involving intramolecular vibrations has an essentially cooperative characteristic because both lanthanide ion and ligands are involved in these processes and excitation is localized on spatially separated ionic and molecular centres.…”

Vibrational modes of rare‐earth formates

“…Recently, Bohaty et al [6] have investigated the mechanical, thermo-mechanical and piezoelastic properties of the Y(HCOO) 3 · 2H 2 O and Er(HCOO) 3 · 2H 2 O formates. The isotopic effect in the vibronic spectra of Eu(HCOO) 3 and Eu(DCOO) 3 was investigated for Tsaryuk et al [7] The room-temperature crystal structure of Gd(HCOO) 3 was reported by Pabst. [8] The RE(HCOO) 3 compounds are isostructural and crystallize in a trigonal system belonging to the R3m (C 3 5 ) space group with three formula units per unit cell (Z = 3).…”