ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Study of acid-base properties of N,N'-di(2-hydroxybenzyl)-ethylenediamine-N,N'-diacetic acid and its chelates with lanthanides

L. Sirotková, P. Novomeský E. Dvořáková, I. Valášková, and J. Majer

Department of Analytical Chemistry, Faculty of Pharmacy, Komenský University, CS-832 32 Bratislava

Abstract: The N,N'-di(2-hydroxybenzyl)ethylenediamine-N,N'-diacetic acid (HBED) represents a pplydonor ligand with phenolic functional group, which is suitable for chelation with M(III). The Potentiometrie measurements, UV spectrophotometry, and  ¹H NMR spectroscopy were used for the study of acid-base properties. The study of complex formation with rare earth elements was performed by Potentiometrie method and paper electrophoresis. The stability constants of complexes of ML type, as well as the hydrogen complexes of MH₂L and MHL type at I_c(KNO₃) = 0.1 mol dm^-3 and T = 293.2 К were evaluated from the neutralization curves.

Full paper in Portable Document Format: 395a639.pdf

Chemical Papers 39 (5) 639–648 (1985)