Orientational ordering and site-selective photochemistry of UF/sub 6/ isolated in argon matrices

Journal Article · Thu Mar 29 04:00:00 EST 1984 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150651a008· OSTI ID:7050550

Jones, L H; Swanson, B I; Ekberg, S A

High-resolution studies of the ..nu../sub 3/ mode of UF/sub 6/ in argon matrices show two dominant sites with a high degree (80%) of orientational ordering. Upon photolysis UF/sub 5/ is formed but recombines in part to form UF/sub 6/ on metastable sites. One site is considerably more amenable to photolysis than the other. On high-temperature annealing (40 K) all the UF/sub 5/ is converted back to UF/sub 6/ and the original dominant sites are re-formed to a considerable extent. Through all this photoexcitation, dissociation, recomvination, and annealing the original ordering is preserved. 2 figures.

• Research Organization: Los Alamos National Lab., NM
• OSTI ID: 7050550
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 88:7; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400500 -- Photochemistry
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
ANNEALING
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DISSOCIATION
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HEAT TREATMENTS
INFORMATION
INFRARED SPECTRA
IONIZATION
MATRIX ISOLATION
NUMERICAL DATA
PHOTOCHEMICAL REACTIONS
PHOTOIONIZATION
PHOTOLYSIS
RECOMBINATION
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
URANIUM COMPOUNDS
URANIUM FLUORIDES
URANIUM HEXAFLUORIDE
VERY LOW TEMPERATURE