TARTRATE COMPLEXES OF THE RARE-EARTH ELEMENTS. I. THE d-, dl-, AND meso- TARTRATE COMPLEXES OF Tb AND Eu
Solvent extraction and radiotracer techniques were applied to the study of metal-tartrate ion association in water at 25 deg C. Trace concentrations of the radioisotopes Tb/sup 160/ and Eu/sup 152/154/ were equilibrated between aqueous sodium tartrate solutions and organic phases of thenoyltrifluoroacetone in toluene. The ionic strength (0.0597) and the pH (4.53) of the aqueous phase were kept constant by means of sodium perchlorate and sodium acetate. Metal complexing with the d-, dl-, and meso isomers of the ligand was examined. For all isomers two complex species were identified with metal: ligand ratios of 1: 1 and 1: 2, and stability constants for both stages of ion association were estimated. No third (1: 3) complex was detected. Metal coordination numbers and the formation of tartratetartrate hydrogen bridges in the 1: 2 complex are discussed. (auth)
- Research Organization:
- Dept. of Mines and Technical Surveys, Ottawa
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-039036
- OSTI ID:
- 4657298
- Journal Information:
- Canadian Journal of Chemistry (Canada), Journal Name: Canadian Journal of Chemistry (Canada) Vol. Vol: 41; ISSN CJCHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ACETONE
ACIDITY
BINDING ENERGY
BONDING
CHEMISTRY
COMPLEXES
EUROPIUM
EUROPIUM 152
EUROPIUM 153
EUROPIUM 154
EUROPIUM COMPLEXES
HYDROGEN
INTERACTIONS
IONIC STRENGTH
IONS
ISOMERS
LIGANDS
ORGANIC ACIDS
ORGANIC FLUORINE COMPOUNDS
PERCHLORIC ACID
RADIOISOTOPES
RARE EARTHS
SODIUM COMPOUNDS
SOLUTIONS
SOLVENT EXTRACTION
STABILITY
TARTARIC ACID
TERBIUM
TERBIUM 160
TERBIUM COMPLEXES
TOLUENE
TRACE AMOUNTS
TRACER TECHNIQUES
TTA
WATER