Infrared spectra of matrix-isolated plutonium oxides

Journal Article · Sat Jul 15 04:00:00 EDT 1978 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.436620· OSTI ID:6739140

Green, D W; Reedy, G T

The infrared absorption spectra of PuO and PuO/sub 2/ in both Ar and Kr matrices have been identified. The observed frequencies at 794.25 and 786.80 cm/sup -1/ have been assigned to the ..nu../sub 3/ stretching modes of Pu/sup 16/O/sub 2/ in Ar and Kr matrices, respectively. Normal coordinate analysis of the PuO/sub 2/ isotopomers, Pu/sup 16/O/sub 2/, Pu/sup 16/O/sup 18/O, and Pu/sup 18/O/sub 2/, in Ar showed that the molecule is linear. The derived stretching force constants are f=5.2476 +- 0.0010 and f '=0.0034 +- 0.0010 mdyn A/sup -1/. The PuO molecule exists in multiple sites in Ar matrices, but not in Kr matrices. The observed Pu/sup 16/O vibrational frequency in the most stable site in Ar is 822.28 cm/sup -1/ and in Kr is 817.27 cm/sup -1/. No absorption peaks were observed that could be assigned to PuO/sub 3/.

• Research Organization: Chemical Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 6739140
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 69:2; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
ACTINIDE COMPOUNDS
CHALCOGENIDES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
INFRARED SPECTRA
MOLECULAR STRUCTURE
OXIDES
OXYGEN COMPOUNDS
PLUTONIUM COMPOUNDS
PLUTONIUM OXIDES
SPECTRA
TRANSURANIUM COMPOUNDS
VIBRATIONAL STATES