Vibrational relaxation of hexafluoride compounds: MoF/sub 6/, ReF/sub 6/, SeF/sub 6/, and WF/sub 6/

Journal Article · Fri Oct 15 00:00:00 EDT 1982 · J. Chem. Phys.; (United States)

OSTI ID:6864581

Bass, H E; Jensen, V; Ezell, J

Ultrasonic attenuation has been measured in MoF/sub 6/, ReF/sub 6/, SeF/sub 6/, and WF/sub 6/ at 293 K. In all cases, a single relaxation process was observed and attributed to the total vibrational energy of the relaxing molecule. Isothermal relaxation times were found to be 2.8 x 10/sup -8/, 8.8 x 10/sup -9/, 2.9 x 10/sup -7/, and 2.3 x 10/sup -8/ s atm for MoF/sub 6/, ReF/sub 6/, SeF/sub 6/, and WF/sub 6/, respectively. Assuming series relaxation, those relaxation times can be converted to the number of collisions required for relaxation Z/sub vib/. The values of Z/sub vib/ vary with the energy of the lowest vibrational mode as expected from the simple Lambert--Salter correlation.

• Research Organization: Physical Acoustics Research Group, Department of Physics and Astronomy, The University of Mississippi, University, Mississippi 38677
• OSTI ID: 6864581
• Journal Information: J. Chem. Phys.; (United States), Vol. 77:8
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
MOLYBDENUM FLUORIDES
VIBRATIONAL STATES
RHENIUM FLUORIDES
SELENIUM FLUORIDES
TUNGSTEN FLUORIDES
ATTENUATION
RELAXATION
ULTRASONIC WAVES
WAVE PROPAGATION
ENERGY LEVELS
EXCITED STATES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
MOLYBDENUM COMPOUNDS
RHENIUM COMPOUNDS
RHENIUM HALIDES
SELENIUM COMPOUNDS
SOUND WAVES
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory