Determination of Stability Constants of Mixed Ligand Complexes of the Lanthanum(III) Ion and Identification of Structures


Cam T., Irez G., AYDIN R.

JOURNAL OF CHEMICAL AND ENGINEERING DATA, vol.56, no.5, pp.1813-1820, 2011 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 56 Issue: 5
  • Publication Date: 2011
  • Doi Number: 10.1021/je100799h
  • Journal Name: JOURNAL OF CHEMICAL AND ENGINEERING DATA
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.1813-1820

Abstract

In this study, the stability constants of a mixed ligand complex of lanthanum(III) ion by using ethylenediaminetetraacetic acid (EDTA, H(2)A) as a primary ligand and 2,3-dihydroxybenzoic acid (2,3-DHBA, H3B) as a secondary ligand have been investigated. The stability constants of the binary and mixed ligand complexes have been determined by using a potentiometric method and the BEST computer program at 25 degrees C, in a 0.1 M NaCl ionic medium. In addition, the identified ternary complex by potentiometry was isolated as a solid, and the structural characteristics have been examined using IR, NMR, elemental analysis, differential thermal analysis, thermogravimetric analysis, and the conductivity method.