Uranyl complexes of n-alkanediaminotetra-acetic acids.
The uranyl complexes of n-propanediaminetetra-acetic acid, n-butanediaminetetra-acetic acid and n-hexanediaminetetra-acetic acid have been studied by potentiometry, with computer evaluation of the titration data by the MINIQUAD program. Stability constants of the 1:1 and 2:1 metal:ligand chelates have been determined as well as the respective hydrolysis and polymerization constants at 25 degrees in 0.10M and 1.00M KNO(3). The influence of the length of the alkane chain of the ligands on the complexes formed is discussed.
Gonçalves
M L
ML
Centro de Química Estrutural, Instituto Superior Técnico, 1096 Lisboa Codex, Portugal.
Mota
A M
AM
da Silva
J J
JJ