Photophysical studies of uranyl complexes. 2. Evidence for splitting of the luminescent excited state of the uranyl ion
- Seton Hall Univ., South Orange, NJ
High-resolution luminescence spectra have been obtained for the uranyl ion in uranyl acetate hydrate (U-O/sub 2/(C/sub 2/H/sub 3/O/sub 2/)/sub 2/2H/sub 2/O), lithium uranyl nitrate (LiUO/sub 2/(NO/sub 3/)/sub 3/), rubidium uranyl nitrate (RbUO/sub 2/(NO/sub 3/)/sub 3/), disodium uranyl bis(pyridine-2,6-dicarboxylate) (Na/sub 2/UO/sub 2/(C/sub 7/H/sub 3/NO/sub 4/)/sub 2/), zinc uranyl acetate hydrate (ZnUO/sub 2/(C/sub 2/H/sub 3/O/sub 2/)/sub 4/7H/sub 2/O), bis(iminodiacetato)dioxouranium(VI) (UO/sub 2/(C/sub 4/H/sub 5/NO/sub 4/)/sub 2/), and uranyl sulfate hydrate (UO/sub 2/(SO/sub 4/)/sub 2/.3.5) at 77 K. The vibronic structure observed in the luminescence spectra has been analyzed in terms of both an unsplit emitting state and a slightly split excited state. The data can best be explained by invoking a split excited state, and arguments are presented which indicate that this splitting is due to a descent in symmetry experienced by the uranyl ion when it is placed in a crystal field.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6065776
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 84:21; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACETATES
ACTINIDE COMPLEXES
ALKALI METAL COMPOUNDS
AZINES
CARBOXYLIC ACID ESTERS
CARBOXYLIC ACID SALTS
CATIONS
CHARGED PARTICLES
COMPLEXES
DATA
ENERGY LEVELS
ESTERS
EXCITED STATES
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HYDRATES
INFORMATION
IONS
LITHIUM COMPOUNDS
LOW TEMPERATURE
LUMINESCENCE
MINES
NITRATES
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PYRIDINES
RUBIDIUM COMPOUNDS
SODIUM COMPOUNDS
URANIUM COMPLEXES
URANYL COMPLEXES
ZINC COMPOUNDS