Complex equilibrium study of some hydroxyl aromatic lignds with beryllium ion

Santoso, Shella Permatasari and Angkawijaya, Artik Elisa and Soetaredjo, Felycia Edi and Ismadji, Suryadi and Ju, Yi-Hsu (2015) Complex equilibrium study of some hydroxyl aromatic lignds with beryllium ion. Journal of Molecular Liquids, 212. 524 -531. ISSN 0167–7322

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Abstract

Equilibrium studies of beryllium with 2,3-dihydroxybenzoic acid, 3,4-dihydroxybenzoic acid and gallic acid in an aqueous solution at 310.15 K, an ionic strength of 0.15 mol•dm − 3NaCl and pH 2.5 to 11.0 were investigated by the pH-potentiometric method. Stability constants of the complexes were determined by HyperQuad2008 and presented as log β. Contributing binding sites of these ligands were evaluated by comparing its log β with some structurally related ligands such as catechol and salicylic acid. Spectrophotometric measurements were done to con firm the formation of thecomplex species. Geometry optimization and frequencyanalysis of thecomplexes were performed by using Gaussian09W program to verify the contributing binding sites. The results indicate that the ability of ligands in preventing the hydrolysis of Be 2+ follows the order: 3,4-dihydroxybenzoic acid N2,3-dihydroxybenzoic acid N gallic acid.

Item Type: Article
Uncontrolled Keywords: Beryllium Beryllium complex Hydroxy aromatic ligand Potentiometric Stability constant
Subjects: Engineering > Chemical Engineering
Divisions: Faculty of Engineering > Chemical Engineering Study Program
Depositing User: Felycia Edi Soetaredjo
Date Deposited: 17 Jul 2017 08:06
Last Modified: 11 Oct 2018 03:50
URI: http://repository.wima.ac.id/id/eprint/11032

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