Vibrational Spectra of Phosphorus Oxoacid Cation Exchangers and Features of Their Interaction with Indium and Gallium Cations

Vibrational spectra of phosphorus oxoacid cation exchangers are interpreted via theoretical analysis based on model calculations of the characteristics of active fragments of ion exchangers and complexes of them with metal cations. Varying the type of substituent at the phosphorus atom in the chelating ion exchanger during spectroscopic studies reveals characteristic features of the sorption of disperse elements and determines the most likely coordination structures of the resulting complexes in the series of phosphorus-containing sorbents based on polystyrene.