Vibrational and electronic spectra of Na[UO2(CH3COO)3]

Raman, infrared, electronic absorption and luminescence spectra of Na[UO2(CH3COO)3] have been measured at temperatures down to 10 K. Multiple structure in the region of the lowest-energy electronic origin is shown to be due to the presence of a substantial concentration of defect sites. In the luminescence spectra these defect sites are populated by energy transfer from the majority species. Most of the vibrational modes of the uranyl and acetate groups have been identified and their vibronic intensity mechanism in the electronic spectra discussed. (author)