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Complexons. XVI. Acid-base and chelating properties of complexons of the type 1,2-diaminoalkane- and 1,2-diaminoisoalkane-N,N,N',N'-tetraacetic acids

V. Novák, E. Dvořáková, and J. Majer

Institut für analytische Chemie der Pharmazeutischen Fakultät an der Komenský-Universität, Bratislava 1

 

Abstract:  On the basis of evaluation of Potentiometrie curves the р/с values of new complexanes which form two homologous series of 1,2-diaminoalkane- and l^-diaminoisoalkane-iVjiV^'jiV'-tetraacetic acids, as well as the stability constants of their chelates with Ca2+, Sr2+, Ba2+ and Mg2+ cations were determined. The stability constants of Cd2+ complexes were determined by the „tren" method. Measurements were performed at ionic strength /I= 0.10 (KN03) and at temperature of 20°C. The influence of individual alkyl groups on changes of acid-base and chelating properties was investigated.

Full paper in Portable Document Format: 233a161.pdf (in German)

 

Chemical Papers 23 (3) 161–165 (1969)

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