Work

Stability Constants of Kinetically Inert Ge(IV) Complexes in Aqueous Solution by Discontinuous Potentiometry: Hydroxycarboxylate, Aminocarboxylate and (Poly-)Amino(Poly-)Carboxylate Ligands

Year: 2025

Type: article

Abstract: This is an experimental study of the complex formation between aqueous Ge(IV) and organic ligands of the α- and β-hydroxycarboxylate, α- and β-aminocarboxylate and (poly-)amino(poly-)carboxylate types in aqueous solution at 25.0 °C. α-substituted ligands (such as α-amino acid anions and ligands of the EDTA-family) were found to give rise to kinetically inert systems, which must be studied by a discontinuous potentiometric titration technique (i.e., for each titration point, an individual solution is prepared and left to equilibrate for extended periods of time). β-substituted ligands formed much weaker complexes and their reactions were labile. Speciation diagrams are presented and discussed for all the studied systems.

Source: Journal of Solution Chemistry

DOI: 10.1007/s10953-025-01459-y

Authors: Marc Biver, Montserrat Filella

Institutions: National Library of Luxembourg, University of Geneva

Language: English

Topic: Chemical and Physical Properties in Aqueous Solutions

Subfield: Filtration and Separation

Field: Chemical Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,490

Funder: Université de Genève