High-temperature Raman spectroscopic studies of indium halide vapors and molten salts: InX, InX/sub 2/, InX/sub 3/, and InAlX/sub 4/ (X=Cl, Br)

Journal Article · Tue Jan 15 04:00:00 EST 1980 · J. Chem. Phys.; (United States)

OSTI ID:5635946

Radloff, P L; Papatheodorou, G N

Raman spectra were obtained at temperatures up to 1200 K for vapors over liquid indium halides with In:X (X=Cl, Br) ratios of 1:1, 1:2, and 1:3 and for vapors over liquid InAlX/sub 4/. Spectra were also measured for molten InX/sub 2/ and InAlX/sub 4/ salts. The spectra of InX vapors consisted of O, Q, and S vibrational--rotational contours with maxima at ..delta nu../sub Q/(InCl) =305 cm/sup -1/ and ..delta nu../sub Q/(InBr) =213 cm/sup -1/. Pure rotational O and S band contours were also resolved at frequencies close to the frequency of the laser excitation line. Vibrational--rotational contours for the InX molecules were simulated using known molecular constants and accounting for contributions of both trace and anisotropic scattering. Preresonance enhancement of the Raman intensities and changes in the ''linear'' depolarization ratio with laser frequency were also observed for the InX molecules. The spectra of vapors over InX/sub 3/ were characteristic of a dimer--monomer indium (III) halide equilibrium. Raman spectra of vapors over InX/sub 2/ and InAlX/sub 4/ liquids show the formation of vapor complexes and vapor dissociation according to the reactions: A comparison of the Raman spectra of liquid InX/sub 2/ and InAlX/sub 4/ with the corresponding spectra of the vapors indicates that the same molecular species are present in both phases.

• Research Organization: Chemical Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 5635946
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 72:2; 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
ALUMINIUM BROMIDES
ALUMINIUM CHLORIDES
ALUMINIUM COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
HALIDES
HALOGEN COMPOUNDS
INDIUM BROMIDES
INDIUM CHLORIDES
INDIUM COMPOUNDS
MOLTEN SALTS
RAMAN SPECTRA
ROTATIONAL STATES
SALTS
SPECTRA
VERY HIGH TEMPERATURE
VIBRATIONAL STATES