Electron transfer spectra of some solid lanthanide(III) complexes

Abstract

Electron transfer spectra are reported for the compounds LnPO₄,Ln₂(CO₃)₃,3H₂O,Ln₂(oxalate)₃,10H₂O, and several compounds containing sulphate or halide ions (Ln = Sm, Eu, and Yb). The shifts in the band positions correlate with the number of co-ordinated ligands. All oxygen donors of the type AO_n^x–(sulphate, selenate, etc.) show similar optical electronegativities. The ytterbium spectra are sometimes difficult to correlate with those of the other metals because of changes in co-ordination sphere. Electron transfer spectra of lanthanide halides do not always show the same halide dependence as transition-metal spectra.