2008•Zeitschrift für Naturforschung BOpen access

Study of the [Zn(H2O)4CuEDTA]·2H2O Complex, a Potential Trace-metal Supplier: Synthesis, Crystal Structure, Spectroscopic Behavior and Metal Release

E. Santi, Enrique J. Baran, Javier Ellena, Otaciro R. Nascimento, Marı́a H. Torre

Abstract

Ethylenediaminetetraacetic acid (H4EDTA) is widely used in the pharmaceutical and bromatological industries and as a drug in chelation therapies. Besides, coordinated with metal ions it is used for the supplementation of essential trace elements. In this work the synthesis, crystallographic, and spectroscopic studies (EPR, IR, UV/Vis) of [Zn(H2O)4CuEDTA] · 2H2O are reported. The release of the metal cations at gastric pH was also investigated.

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Key concepts: Ethylenediaminetetraacetic acid, Metal, Chelation, Chemistry, Metal ions in aqueous solution, Trace metal, Electron paramagnetic resonance, Inorganic chemistry