Thermal stability of uranyl complexes with neutral oxygen-containing organic bases
The thermal stability of uranyl chloride, nitrate, and oxalate with a series of neutral oxygen-containing organic ligands is discussed. It was found that the temperatures of removal of chlorine are higher than the stripping of the first molecule of the base in complexes UO/sub 2/Cl/sub 2/ x 2L. This is an indication of greater strength of the bonds of the Cl/sup -/ ions to the uranyl group in comparison with the investigated bases. It was shown that the temperatures of removal of a mole of neutral ligands depend little on the nature of the anions and exhibit a correlation with the donor capacity of the bases: Ac < TBP < DMFA similarly ordered DMSO < TBPO similarly ordered PyO. The chemistry of the decomposition of the complexes and the strength of the binding of the acido- and neutral ligands in them are discussed.
- OSTI ID:
- 6559095
- Journal Information:
- Sov. Radiochem. (Engl. Transl.); (United States), Vol. 28:4; Other Information: Translated from Radiokhimiya; 28: No. 4, 449-453(Jul-Aug 1986)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
LIGANDS
BINDING ENERGY
TEMPERATURE EFFECTS
URANYL COMPLEXES
CHEMICAL BONDS
COMPLEXOMETRY
COORDINATION VALENCES
DIFFERENTIAL THERMAL ANALYSIS
DISSOCIATION ENERGY
DMSO
FORMAMIDE
HYDRATES
ORGANIC PHOSPHORUS COMPOUNDS
OXALATES
PYROLYSIS
PYROLYSIS PRODUCTS
STABILITY
TBP
TBPO
THERMAL GRAVIMETRIC ANALYSIS
URANYL CHLORIDES
URANYL NITRATES
ACTINIDE COMPLEXES
ACTINIDE COMPOUNDS
AMIDES
BUTYL PHOSPHATES
CARBOXYLIC ACID SALTS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
DECOMPOSITION
ENERGY
ESTERS
GRAVIMETRIC ANALYSIS
HALIDES
HALOGEN COMPOUNDS
NITRATES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHORIC ACID ESTERS
QUANTITATIVE CHEMICAL ANALYSIS
SULFOXIDES
THERMAL ANALYSIS
THERMOCHEMICAL PROCESSES
URANIUM COMPLEXES
URANIUM COMPOUNDS
URANYL COMPOUNDS
VALENCE
400201* - Chemical & Physicochemical Properties