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. |
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Authors: | D Atzei T Ferri C Sadun P Sangiorgio R Caminiti |
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Institution: | Dipartimento di Chimica, INFM Istituto Nazionale di Fisica della Materia, Università degli Studi di Roma La Sapienza, Ple A. Moro 5, 00185 Rome, Italy. |
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Abstract: | 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. |
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