Resonance Raman spectroscopic and density functional theoretical study of dynamical structures of Cu(II)-bisacetylacetone

The A- and B-band resonance Raman spectra of Cu(II)-bisacetylacetone in methanol solution were obtained and their intensity patterns were found to be significantly different. It appears that the A-band structural dynamics is mostly along the photophysically and photochemically important CγCβ/CβCα and Cu–O stretch reaction coordinates, while the B-band structural dynamics is mainly along photochemically important Cu–O stretch reaction coordinate. The significantly different structural dynamics provide an evident that the primary photoreduction reactions of Cu(II)-bisacetylacetone are wavelength dependence.