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Complex formation equilibria in iron(III)-L-alanine system

✍ Scribed by Predrag Djurdjević; Ratomir Jelić

Book ID
104636471
Publisher
Springer
Year
1993
Tongue
English
Weight
565 KB
Volume
18
Category
Article
ISSN
0340-4285

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✦ Synopsis

Complex formation in iron(III)-L-alanine solutions was studied by emf glass electrode and spectrophotometric measurements, in 0.5 mol dm-3 (Na)NO3 medium, at 25 ~ C. In the concentration range 0.5 ~< [Fe]o ~< 20.0, 5.0 ~< [Ala]0 ~< 1000.0 (mmoldm -3) and 1.0 ~< -log [H+-I ~< 3.5; { [Ala]/[Fe] = 10:1-100:1} the equilibria in the title system were explained by the model including the species FeHL, FeL, Fe(OH)L, Fe2(OH)zL 2 (where HL denotes L-alanine) and several hydrolytic products. The stability constants of complexes are given. The mechanism of formation and structure of complexes in solution is proposed.

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Peculiar kinetics of the complex formation in the iron(III)–sulfate system
✍ Balázs Kormányos; Gábor Peintler; Andrea Nagy; István Nagypál 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 447 KB

## Abstract The results of comprehensive equilibrium and kinetic studies of the iron(III)–sulfate system in aqueous solutions at I = 1.0 M (NaClO~4~), in the concentration ranges of __T__ = 0.15–0.3 mM, and at pH 0.7–2.5 are presented. The iron(III)–containing species detected are FeOH^2+^ (=FeH~−1