Schwingungsspektroskopische Untersuchungen an Hydroxokomplexen des Zinks und Cadmiums / Vibrational Spectroscopic Investigations of Hydroxy Complexes of Zinc and Cadmium

Abstract

The infrared and Raman spectra of aqueous alkaline Zn(II) solutions and of crystalline tri-, tetra- and hexahydroxo zincate(II) and tetra- and hexahydroxocadmate(II) salts, respectively, are reported and discussed. Between 5 ᴍ and 15 ᴍ NaOH concentrations only the tetrahedral [Zn(ΟΗ)4]2⊖-ion is present in solution. Direct coordination of H2O to Zn(II) does not take place in an essential order of magnitude at any concentration