S. Ramamoorthy

Stability constants in aqueous solution of complexes of uranyl ion with mixed dibasic acids—II

Abstract Systems of uranyl ion-succinic-adipic; uranyl ion-succinic-thiomalic and uranyl ion-succinic-itaconic acids were studied by pH titration method at μ = 0·1 (NaClO 4 ) and T = 31°C. The formation of 1:1:1 complexes was inferred from the titration curves and their stability constants are reported.

Spectrophotometric investigation of complexes involving Cu++ and some carboxylic acids

Abstract Complexometric studies on Cu(ClO 4 ) 2 -carboxylic acid (formic, acetic, propionic, α- and β-hydroxy propionic, chloro and phenyl acetic acids, triammonium aurin tricarboxylate etc.) systems were carried out by spectrophotometric methods at 30°C ± 0·1°C and μ = 0· 1 and stability constants for various complexes were evaluated.

COMPLEXES OF URANYL ION WITH BUTYRIC AND ISOBUTYRIC ACIDS.

Abstract Systems of uranyl ion with butyric and isobutyric acids were studied by pH titration at 31° ± 0·1°C and μ = 0·1 (NaClO 4 ). 1:1 and 1:2 Uranyl:acid, complexes with isobutyric and butyric acids were detected in the pH range 1·5–3·5. The stability constants log K ML 1 = 3·40, log K ML 2 = 2·43 for isobutyric acid and log K ML 1 = 2·91, log K ML 2 = 1·62 for butyric acid were determined.

Spectrophotometric studies on complexes of Cu++ with malic and itaconic acids

Abstract Spectrophotometric studies on complexes of Cu++ with malic and itaconic acids at 30°C and μ = 0·1 showed the formation of 2:1 and 1:1 complexes. Log KML = 3·93 and log KM2L = 7·71 for Cu±± malic acid system and log KML = 2·96 and log KM2L = 3·82 for Cu±± itaconic acid system were evaluated.