Published February 1983
| Version v1
Journal article
Copper, dioxouranium(VI) and lanthanide chelates of carboxymethylthiosuccinic acid
Creators
- 1. K.E.M. Coll., Manwath (India). Dept. of Chemistry
- 2. Marathwada Univ., Aurangabad (India). Dept. of Chemistry
Description
Carboxymethylthiosuccinic acid (CMTSA) has three dissociable - COOH groups with pK values 2.91, 3.91, 5.03. Assignment of these values to the different carboxylic groups is given. Cu(II) and UO22+ chelates with CMSTA have been studied potentiometrically at 30degC and μ = 0.1M. The effects of dielectric constant of the solvent medium (dioxane-water) and the ionic strength, on these chelates have been examined. The lanthanides form 1:1 and 1:2 chelates with CMTSA. The plots of log K1 and (log K1 + log K2) versus e2/2r show a break at gadolinium. The thermodynamic parameters for these chelates have been determined. Smaller values of DELTAH show the predominance of the entropy effect in the formation of these chelates. (author)
Additional details
Publishing Information
- Journal Title
- Indian J. Chem., Sect. A
- Journal Volume
- 22
- Journal Issue
- 2
- Series
- Indian J. Chem., Sect. A.
- Journal Page Range
- 124-127
- ISSN
- 0376-4710
- CODEN
- IJCAD
INIS
- Country of Publication
- India
- Country of Input or Organization
- India
- INIS RN
- 17046664
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- CHELATES; CHEMICAL REACTION KINETICS; DICARBOXYLIC ACIDS; DISSOCIATION; ENTHALPY; ENTROPY; FREE ENERGY; POTENTIOMETRY; RARE EARTH COMPLEXES; URANYL COMPLEXES
- Descriptors DEC
- ACTINIDE COMPLEXES; CARBOXYLIC ACIDS; COMPLEXES; ENERGY; KINETICS; ORGANIC ACIDS; ORGANIC COMPOUNDS; PHYSICAL PROPERTIES; REACTION KINETICS; THERMODYNAMIC PROPERTIES; TITRATION; URANIUM COMPLEXES
Optional Information
- Notes
- 18 refs.