Volatile adducts of uranyl trifluoroacetate
Uranyl trifluoroacetate UO/sub 2/A/sub 2/ and its adducts with hexamethyl phosphoric triamide (HMPTA), dimethyl sulfoxide (DMSO) and 1,10-phenanthroline (phen) with a 1:2, 1:3 and 1:2 composition, respectively, were synthesized (the two last compounds for the first time). The ability of these complexes to undergo vacuum sublimation was studied. It was shown that the necessary condition for the volatility of UO/sub 2/A/sub 2/ is the presence of a strong neutral ligand. The adducts synthesized were studied by IR spectroscopy using an /sup 18/O tracer in the uranyl and carboxyl groups. The mode of coordination of the trifluoroacetate group was deduced from the reciprocal position of the /eta//sub asCOO/ and /eta//sub sCOO/ bands, and also from their isotopic splitting. The structure of the adducts with HMPTA and DMSO in solution was studied by NMR spectroscopy. It was found that for these adducts, an equilibrium exists between a trisolvate, disolvate and free ligand, which with decrease in temperature shifts in the direction of formation of a trisolvate.
- OSTI ID:
- 5923199
- Journal Information:
- Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 29:6; ISSN SVRDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ACETATES
ACTINIDE COMPLEXES
ADDUCTS
AMIDES
CARBOXYLIC ACID SALTS
CHEMICAL ANALYSIS
CHEMICAL SHIFT
COMPLEXES
COORDINATION VALENCES
DEUTERIUM COMPOUNDS
DMSO
EQUILIBRIUM
EVAPORATION
EVEN-EVEN NUCLEI
GRAVIMETRIC ANALYSIS
HYDROGEN COMPOUNDS
INFRARED SPECTRA
ISOTOPE APPLICATIONS
ISOTOPES
LIGANDS
LIGHT NUCLEI
LINE BROADENING
MOLECULAR STRUCTURE
NMR SPECTRA
NUCLEI
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SOLVENTS
ORGANIC SULFUR COMPOUNDS
OXYGEN 18
OXYGEN ISOTOPES
PHASE TRANSFORMATIONS
QUANTITATIVE CHEMICAL ANALYSIS
SOLVATION
SOLVENTS
SPECTRA
SPECTRAL SHIFT
STABLE ISOTOPES
SUBLIMATION
SULFOXIDES
SYNTHESIS
TRACER TECHNIQUES
URANIUM COMPLEXES
URANYL COMPLEXES
VALENCE
VOLATILITY