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Spectral assignments based on the 13C NMR spectra of mixed liquid crystals of opposite diamagnetic anisotropies

Kumar, Arun BS and Suryaprakash, N and Ramanathan, KV and Khetrapal, CL (1988) Spectral assignments based on the 13C NMR spectra of mixed liquid crystals of opposite diamagnetic anisotropies. In: Journal of Magnetic Resonance (1969), 76 (2). 256 -263.

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Official URL: http://dx.doi.org/10.1016/0022-2364(88)90108-4

Abstract

The proton-decoupled 13C NMR spectra of mixtures of liquid crystals with opposite diamagnetic anisotropies have been studied in the natural abundance of 13C. A new method to assign the spectral lines to specific carbons in the liquid crystalline phase has been developed. For this purpose, the assignments of lines in the isotropic media are required, and they were obtained from two-dimensional hetero-COSY experiments. From the spectra in the �critical� mixtures where both the orientations of the liquid crystal directors, with the alignments along and perpendicular to the direction of the magnetic field, �coexist,� the 13C chemical-shift anisotropies have been determined, assuming uniaxial symmetry.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier science.
Department/Centre: Others
Date Deposited: 30 Sep 2010 07:35
Last Modified: 30 Sep 2010 07:35
URI: http://eprints.iisc.ernet.in/id/eprint/32558

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