Optical spectra of CuO2 and matrix effect upon its structure

Optical absorption and laser-induced fluorescence (LIF) spectra of CuO2 in solid matrices are investigated, and previous visible studies are extended into the infrared. Several new electronic states are observed and their vib rational frequencies determined. The matrix data are compared with the resu lts of recent gas phase CuO2- photodetachment studies, and with ab initio c alculations. We also discuss the unusually large matrix effects and medium- induced electronic and vibrational frequency shifts observed for CuO2. (C) 2000 American Institute of Physics. [S1063-777X(00)01609-1].