Structural Characterization of Complexes between Iminodiacetate Blocked on Styrene−Divinylbenzene Matrix (Chelex 100 Resin) and Fe(III), Cr(III), and Zn(II) in Solid Phase by Energy-Dispersive X-ray Diffraction

• Published in: Journal of the American Chemical Society Vol. 123; no. 11; pp. 2552 - 2558
• Main Authors: Atzei, D, Ferri, T, Sadun, C, Sangiorgio, P, Caminiti, R
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 21.03.2001
• ISSN: 0002-7863; 1520-5126
• DOI: 10.1021/ja0003728

Local structure of Fe(III), Cr(III), and Zn(II) cations has been determined on the amorphous sample by means of the difference method used for liquid systems. We recorded energy-dispersive X-ray diffraction spectra of a chelating resin (Chelex 100), containing paired iminodiacetate ions coupled to a styrene-divinylbenzene support, in several ionic forms. Coordination geometry of Fe(III), Cr(III), and Zn(II) metal cations with Chelex 100 resin ligand sites, and conformation of the ligand groups have been determined.