Vibrational spectra and structures of XeF₄ and XeOF₄

Conference · Sun Mar 31 23:00:00 EST 1963

OSTI ID:4682831

Claassen, H. H.; Chernick, C. L.; Malm, J. G.

The infrared spectrum of XeF/sub 4/ vapor has strong bands at 123, 291, and 586 cm/sup -1/. The Raman spectrum of the golid has very intense peaks at 502 and 543 om/sup -1/ and a weaker one at 235 cm/sup -1/. These data show that the molecule is planar and of symmetry D/sub 4h/. The seven fundamental frequencies were assigned as 543 (a/sub 1g/), 291 (a/sub 2u/), 235 (b/sub ig/), 221 (b/sub 1u/), 502 (b/sub ig/), 588 (e/sub u/), and 123 (e/sub u/), the assign ment of 221 cm/sup -1/ to b/sub iu/ being uncertain. The infrared spectrum of XeOF/sub 4/ vapor has intense peaks at 288, 382, 578, 609, and 928.2 cm/sup -1/ and the Raman spectrum of the liquid has bands at 231, 286, 364, 530, 586, and 918 cm/sup -1/. The spectra fit a C/sub 4v/ model very well. The fundamentals determined are: 928.2 (a/sub 1/), 578 (a/sub 1/), 288 (a/sub 1/), 231 (b/sub 1/), 530 (b/sub 2/) , 809 (e), and 382 (e). This leaves one (b/sub 2/) and one (e) fundamental undetermined. Very close correspondence between vibrations in the two molecules indicates that the O--Xe-- F angle in XeOF/sub 4/ must be rather close to 90 deg .

• Research Organization: Argonne National Lab., Ill.; Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• DOE Contract Number: W-31109-ENG-38
• NSA Number: NSA-17-033865
• OSTI ID: 4682831
• Report Number(s): CONF-126-9; AEC-Conf-63-025-37
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ABSORPTION
ATOMIC MODELS
CONFIGURATION
FLUORIDES
FREQUENCY
INFRARED RADIATION
LIGHT
LIQUIDS
MEASURED VALUES
MOLECULES
NUMERICALS
OSCILLATIONS
OXYFLUORIDES
OXYGEN COMPOUNDS
RAMAN EFFECT
SCATTERING
SOLIDS
SPECTRA
SPECTROSCOPY
SYMMETRY
VAPORS
XENON FLUORIDES