Vibrational Spectroscopy of Liquid Crystals: IV. Infrared and Far Infrared Spectra of the MBBA and EBBA Liquid Crystals

Vibrational Spectroscopy of Liquid Crystals: IV. Infrared and Far Infrared Spectra of the MBBA and EBBA Liquid Crystals

Infrared spectra have been recorded for N(p-methoxy) benzylidene- (p-n-butyl) aniline (MBBA) and its ethoxy analog in the crystalline, mesomorphic and isotropic phases. From the spectra obtained for a homeotropic layer in the nematic phase and for an isotropic layer, assignments of the bands are giv...

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Veröffentlicht in:Molecular crystals and liquid crystals (1969) 1976-01, Vol.36 (3-4), p.327-336
Hauptverfasser: Vergoten, Gérard, Fleury, Guy, Jones, R. Norman, Nadeau, Armand
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container_issue 3-4
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container_title Molecular crystals and liquid crystals (1969)
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creator Vergoten, Gérard
Fleury, Guy
Jones, R. Norman
Nadeau, Armand
description Infrared spectra have been recorded for N(p-methoxy) benzylidene- (p-n-butyl) aniline (MBBA) and its ethoxy analog in the crystalline, mesomorphic and isotropic phases. From the spectra obtained for a homeotropic layer in the nematic phase and for an isotropic layer, assignments of the bands are given which are supported by a previous normal coordinate analysis for benzylidene-aniline. Far infrared spectra have also been investigated for these compounds. The observed bands mostly consist of internal vibrations except the presence of a 120 cm −1 band assigned to a librational mode about the long axis of the molecule.
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title Vibrational Spectroscopy of Liquid Crystals: IV. Infrared and Far Infrared Spectra of the MBBA and EBBA Liquid Crystals
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