Franck-Condon analysis of transition-metal complexes

The vibronic structure in the single crystal polarized luminescence spectra of K₂[Pt(CI₄], K₂[PtBr₄], and K₂[Co(CN)₆]•3H₂O is analyzed by Franck-Condon calculations. The various degrees of approximation in the Franck-Condon calculations are described. The differentes in the calculated vibronic intensities and in the calculated excited state distortions resulting from the approximations are discussed. The interpretation of the changes in individual metal-ligand bond lengths is described and photochemical implications are suggested