Equilibria with the thallium(III)triethylenetetraminehexaacetate anion [Tl(ttha)]3- in aqueous solution

CHEN, B., P. LUBAL, S. MUSSO and G. ANDEREGG. Equilibria with the thallium(III)triethylenetetraminehexaacetate anion [Tl(ttha)]3- in aqueous solution. Anal. Chim. Acta. Amsterdam (The Netherlands): Elsevier Science B.V., 2000, vol. 406, No 1, p. 317-323. ISSN 0003-2670.

Basic information

• Original name: Equilibria with the thallium(III)triethylenetetraminehexaacetate anion [Tl(ttha)]3- in aqueous solution
• Authors: CHEN, B., P. LUBAL, S. MUSSO and G. ANDEREGG.
• Edition: Anal. Chim. Acta, Amsterdam (The Netherlands), Elsevier Science B.V. 2000, 0003-2670.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10406 Analytical chemistry
• Country of publisher: Netherlands
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 1.849
• RIV identification code: RIV/00216224:14310/00:00002228
• Organization unit: Faculty of Science
• Keywords in English: Equilibrium studies; Stability Constants; Polyaminopolycarboxylate ligands; Thallium complexes; Ternary complexes
• Tags: Equilibrium studies, Polyaminopolycarboxylate ligands, Stability Constants, Ternary complexes, Thallium complexes

Abstract

The equilibria involving thallium(III)triethylenetetraminhexaacetate [Tl(ttha)]3- were studied.Its stability constant was estimated using UV-VIS spectroscopy for the ligand exchange occuring between bromide and and ttha in the pH range from 0 to 10. The protonated complex [Tl(H3ttha)] is a weak acid allowing the determination of the stability constant of heterobinuclear complexes [MTl(ttha)]- (M=Co, Ni,Cu,Zn, Cd,Pb) by use of alkalimetric titrations of the above acid in presence of different metal ions. In the case of copper the stability constant was also measured spectrophotometrically. The complex formation in solution was verified in two cases by matrix-assisted laser desorption ionisation time-of-flight mass spectrometry. The results are discussed and compared with those of other similar ligands.

Links

• MSM 143100011, plan (intention): Name: Struktura a vazebné poměry, vlastnosti a analýza syntetických a přírodních molekulových ansamblů

Investor: Ministry of Education, Youth and Sports of the CR, Structure and character of bonding, properties and analysis of synthetic and natural molecular ensembles