A SPECTROSCOPIC STUDY OF BINUCLEAR COPPER COMPLEXES IN AQUEOUS POLY(METHACRYLIC ACID) SOLUTIONS

The changes in the ir, visible, and uv spectra and the static magnetism of aqueous solutions of the PMA-Cu(II) system as a function of the degree of neutralization of the polyacid have been recorded. It is concluded that at low polyelectrolyte charge a binuclear copper complex exists which dissociates, yielding mononuclear complexes, on increasing the charge of the polyion. It is shown that the ir intensities of the carboxylate groups may be of considerable use in the identification of binuclear carboxylates.