Nonaqueous chemistry of uranium pentafluoride
Following a report that uranium pentafluoride forms stable solutions in acetonitrile, we have investigated the remarkable behavior of ..beta..-UF/sub 5/ in a wide variety of coordinating and noncoordinating nonaqueous solvents. Nitriles, dimethyl sulfoxide, and dimethylformamide dissolve up to 0.3 g of UF/sub 5//mL at 25/sup 0/C to form stable U(V) solutions containing UF/sub 6//sup -/ anions and solvated UF/sub 4//sup +/ cations. Salts of the type (UF/sub 4/L/sub x/)(UF/sub 6/) have been isolated from these solutions. Alcohols appear to form metastable solutions of U(V) from which mixed alkoxide-fluorides precipitate. Hydrocarbons, ethers, ketones, and amines are chemically attacked by ..beta..-UF/sub 5/, whereas fluorocarbons, SO/sub 2/, and CS/sub 2/ fail to react. A convenient method is also given for producing UF/sub 6//sup -/ salts with a variety of cations. Solutions and isolated solids were characterized by elemental analysis and electronic, infrared, Raman, and EPR spectra.
- Research Organization:
- Los Alamos Scientific Lab., NM
- OSTI ID:
- 5977255
- Journal Information:
- Inorg. Chem.; (United States), Vol. 18:10
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
URANIUM PENTAFLUORIDE
CHEMISTRY
ABSORPTION SPECTRA
ALCOHOLS
AMIDES
AMINES
ANIONS
CARBON SULFIDES
CATIONS
CHEMICAL ANALYSIS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DMSO
ELECTRON SPIN RESONANCE
ETHERS
EXPERIMENTAL DATA
HYDROCARBONS
INFRARED SPECTRA
ISOLATED VALUES
KETONES
MEDIUM TEMPERATURE
NITRILES
NONAQUEOUS SOLVENTS
ORGANIC SOLVENTS
RAMAN SPECTRA
SOLVATION
SULFUR DIOXIDE
TEMPERATURE DEPENDENCE
ACTINIDE COMPOUNDS
CARBON COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
DATA
DATA FORMS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
IONS
MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RESONANCE
SOLVENTS
SPECTRA
SULFIDES
SULFOXIDES
SULFUR COMPOUNDS
SULFUR OXIDES
URANIUM COMPOUNDS
URANIUM FLUORIDES
YIELDS
400702* - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials