Pressure-Induced Change of d-d Luminescence Energies, Vibronic Structure, and Band Intensities in Transition Metal Complexes

Abstract: The effects of hydrostatic pressure on the luminescence spectra of tetragonal transition metal complexes with nondegenerate electronic ground states are analyzed quantitatively using models based on potential energy surfaces dened along normal coordinates. Pressure-induced changes of intensity distributions within vibronic progressions, band maxima, electronic origins, and relaxation rates are discussed for metal-oxo complexes of rhenium(V) and molybdenum(IV) (d2 electron conguration) and for square-planar complexes of palladium(II) and platinum(II) (d8 electron conguration).