Abstract: A polymeric chelates based on salicyldene-o-aminophenol (SAP) chelating with zinc (Zn(II)) ion was studied by several spectroscopic techniques. Molecular mechanics (MM+) calculations suggest that the energy of the optimum molecular geometric structure of a polymeric chelates form of SAP-Zn(II) matrix is lower (stable) about eight (8.15) times of magnitude than the energy of the binary form (SAP-Zn) of the same matrix. A simple, rapid and sensitive method for the spectrophotometric determination of trace amounts of Zn(II) ion in solution by chelating with the SAP is proposed The method has been applied successfully to the determination of (Zn(II) ion in Immu-C sachets samples (mg/g). The proposed method is in excellent agreement with the determination of Zn(II) ion by atomic absorption spectrometry.
 

Keywords: Spectral studied, zinc(II) ion, salicyldene-o-aminophenol, polymer chelates, MM+ calculations, Immu-C sachets samples.