Potentiometric studies of mixed ligand complexes of Sc(III), Y(III) and La(III)

Article type: Research Article

Authors: Çam, Tülay | İrez, Gazi

Affiliations: Department of Chemistry, Faculty of Arts and Sciences, Uludağ University, Bursa, Turkey

Note: [] Corresponding author: Tülay Çam, Department of Chemistry, Faculty of Arts and Sciences, Uludağ University, 16059 Bursa, Turkey. E-mail: [email protected]

Abstract: In this study, the composition and stability constants of a mixed ligand complex of Sc(III), Y(III) and La(III) ion by using NTA (H3B) (Nitrilotriacetic acid) and HEDTA (H3B) (N-(2-hydroxyethyl)ethylenedinitrilotriacetic acid) as a primary ligand and 2,3-DHBA (H3A) (2,3-dihydroxybenzoic acid) as secondary ligand have been determined by using a potentiometric method and the BEST computer programme at 25°C, in a 0.1 M NaCl ionic medium. The complex stability was found to follow the trend Sc(III) > Y(III) > La(III) based on the ionic radius of the metal ions.

Keywords: Potentiometric studies, complexes of Y(III), La(III), Sc(III), stability constants, mixed ligand complexes

DOI: 10.3233/MGC-130116

Journal: Main Group Chemistry, vol. 12, no. 4, pp. 375-386, 2013