Affiliation:
1. 1Laboratory of Inorganic Chemistry, Swiss Federal Institute of Technology, ETH, Wolfgang Pauli Strasse 10, CH 8093 Zürich, Switzerland
2. 2Laboratoire de Chimie-Physique, UMR 7512 (CNRS-ULP), ECPM, 25, rue Becquerel, 67087 Strasbourg Cédex 02, France
3. 3Instituto de Tecnologia Química e Biológica (ITQB), Apartado 127, 2781-901 Oeiras, Portugal and Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
4. 4Pontificia Universidade Católica do Rio de Janeiro, Rua Marques de São Vicente 225-Gávea, 22453-900 Rio de Janeiro-RJ, Brazil
5. 5Institute of Reagents and High Purity Substances (IREA), Bogorodsky val-3, 107258, Moscow, Russia and Moscow State University of Food Production, Volokolamskoye Sh. 11, 125080 Moscow, Russia
Abstract
Available experimental data on stability constants of proton (hydron) and metal complexes for seven complexones of particular biomedical and environmental interest: iminodiacetic acid [2,2'-azanediyldiacetic acid, IDA], (methylimino)diacetic acid [2,2'-(methylazanediyl)diacetic acid, MIDA]; 2,2',2'',2'''-{[(carboxymethyl)azanediyl]bis[(ethane-1,2-diyl)nitrilo]}tetraacetic acid (DTPA), 3,6,9,12-tetrakis(carboxymethyl)-3,6,9,12-tetraazatetradecanedioic acid (TTHA); 2,2',2''-(1,4,7-triazonane-1,4,7-triyl)triacetic acid (NOTA); 2,2',2'',2'''-(1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrayl)tetraacetic acid (DOTA); 2,2',2'',2'''-(1,4,8,11-tetraazacyclotetradecane-1,4,8,11-tetrayl)tetraacetic acid (TETA), published in 1945-2000, have been critically evaluated. Some typical errors in stability constant measurements for particular complexones are summarized. Higher quality data are selected and presented as “Recommended” or “Provisional”.
Subject
General Chemical Engineering,General Chemistry