Absolute intensities of infrared-active fundamentals and combination bands of gaseous PuF/sub 6/ and NpF/sub 6/

Journal Article · Sat Nov 15 04:00:00 EST 1986 · J. Chem. Phys.; (United States)

OSTI ID:5240512

Person, W B; Kim, K C; Campbell, G M; Dewey, H J

Results are presented for the absolute integrated molar absorption coefficients of the infrared-active fundamental and binary combination bands of PuF/sub 6/ and of NpF/sub 6/ between 1400 and 450 cm/sup -1/. The low resolution band contours of the combination bands ..nu../sub 1/+..nu../sub 3/, ..nu../sub 2/+..nu../sub 3/, ..nu../sub 3/+..nu../sub 5/, ..nu../sub 2/+..nu../sub 6/, and ..nu../sub 2/+..nu../sub 4/ are discussed. From band center positions, the six harmonic wave numbers were obtained and Coriolis constant zeta/sub i/ (i = 3, 4, 5, and 6) estimated. For PuF/sub 6/, the six normal mode vibrations appear to group into one ''local mode'' stretching at a mean value of 589 +- 50 cm/sup -1/ and one local mode bending at 195 +- 5 cm/sup -1/. The role of the heavy central atom and the magnitudes of the vibrational force constants are discussed in comparison with UF/sub 6/. The measured intensity for ..nu../sub 3/ is discussed in comparison with previously predicted values.

• Research Organization: University of California, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 5240512
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 85:10; 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
ACTINIDE COMPOUNDS
CORIOLIS FORCE
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFRARED SPECTRA
NEPTUNIUM COMPOUNDS
NEPTUNIUM FLUORIDES
PLUTONIUM COMPOUNDS
PLUTONIUM FLUORIDES
SPECTRA
TRANSURANIUM COMPOUNDS
VIBRATIONAL STATES