Studies of metal halides. III. Far-infrared spectra of chromium(III) and molybdenum(III) complex halides of formula A3M2X9 and A3MX6

1969 ◽  
Vol 22 (8) ◽  
pp. 1627 ◽  
Author(s):  
IE Grey ◽  
PW Smith
Keyword(s):  
Crystal Lattice ◽  
Infrared Spectra ◽  
Far Infrared ◽  
Spectral Features ◽  
Univalent Cations ◽  
Metal Halides ◽  
Stretching Vibrations ◽  
Anion Interaction ◽  
Far Infrared Spectra

Far-infrared spectra are reported for compounds of formula A3M2X9, with M = Cr, Mo; X = Cl, Br; A = univalent cations, for the region 400-200 cm -1. Assignments for metal-terminal halogen and metal-bridging halogen stretching vibrations in the binuclear anion are proposed. Data on several related mono-nuclear hexahalo complexes are included for comparison. An explanation is offered for differences in the spectral features of the series of compounds in terms of distortions of the binuclear anion which arise from cation-anion interaction in the crystal lattice.

Possible identification of sharp features in the Voyager far-infrared spectra of Jupiter and Saturn

1984 ◽  
Vol 62 (8) ◽  
pp. 760-763 ◽  
Author(s):  
A. R. W. McKellar
Keyword(s):  
Infrared Spectra ◽  
Absorption Maximum ◽  
Van Der Waals ◽  
Far Infrared ◽  
Giant Planets ◽  
Spectral Features ◽  
Satisfactory Explanation ◽  
Far Infrared Spectra

Sharp spectral features have been observed in the far-infrared spectra of Jupiter and Saturn as recorded by the Voyager spacecraft missions. These features, which occur very close to the S(0) and S(1) transition frequencies of H2, have recently been analyzed in detail by Gautier, Marten, Baluteau, and Bachet, but there has not been a fully satisfactory explanation for their origin. It is proposed here that the features, and particularly an absorption maximum at 350.5 cm−1, may be due to bound (H2)2 van der Waals dimers in the upper atmospheres of the giant planets.

Coordination complexes of gallium(III) and indium(III) halides. II. Far-infrared spectra of gallium(III) halide complexes with triarylphosphines

1967 ◽  
Vol 45 (24) ◽  
pp. 3187-3192 ◽  
Author(s):  
Arthur J. Carty
Keyword(s):  
Solid State ◽  
Infrared Spectra ◽  
Far Infrared ◽  
Coordination Complexes ◽  
Halide Complexes ◽  
Stretching Vibrations ◽  
Far Infrared Spectra

Infrared spectra of some triarylphosphine and diphosphine complexes of gallium (III) chloride, bromide, and iodide have been recorded in the range 600–200 cm−1 and assignments of gallium–halogen stretching vibrations made. The number and frequencies of the ν (Ga–X) vibrations are consistent with monomeric structures for the triarylphosphine complexes in the solid state. Possible structures for the diphosphine complexes are discussed.

Far-infrared spectra of polycrystallineBa2YCu3O9−δ

1987 ◽  
Vol 36 (1) ◽  
pp. 846-849 ◽  
Author(s):  
G. A. Thomas ◽  
H. K. Ng ◽  
A. J. Millis ◽  
R. N. Bhatt ◽  
R. J. Cava ◽  
...  
Keyword(s):  
Infrared Spectra ◽  
Far Infrared ◽  
Far Infrared Spectra
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