Mixed aminocarboxylic ligand complexes
- 1 January 1995
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions
- Vol. 91 (11) , 1619-1624
- https://doi.org/10.1039/ft9959101619
Abstract
The stabilities of some mixed proton complexes AA′Hj(A = histidine (His), lysine (Lys), histamine (Hist); A′= bi-, tri- and tetra-carboxylic acids, aspartic acid and glutamic acid) have been determined by potentiometry. Different species in each system have been found with j= 1, …, (n+m)– 1 (n and m are the maximum degrees of protonation for the two ligands). The stability of a mixed species is strictly dependent on the charges involved in the formation reactions, and a simple relationship log K=f(zT)(where zT is the sum of charges in the two ligands) is reported.Keywords
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