The stability constants and the electronic spectra of the chlorocuprates CuCl,b-*)-(with j I 4) in aqueous solutions of constant 5 M ionic strength have been calculated from spectrophotometric data at 12 wavelengths ranging from 240 to 780 nm. The calculated spectra are compared to those of solid chlorocuprates and solutions in molten salts or organic solvents, in order to get eventual structural information.