Solvent effects on the structure of N-methylpyrrole as studied by nmr in nematic solvents

Suryaprakash, N and Kunwar, AC and Khetrapal, CL (1984) Solvent effects on the structure of N-methylpyrrole as studied by nmr in nematic solvents. In: Chemical Physics Letters, 107 (3). pp. 333-336.

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Abstract

The proton NMR spectra of N-methylpyrrole oriented in the nematic phases of liquid crystals with positive and negative diamagnetic anisotropies and their mixtures are reported. Geometrical parameters derived from the spectra at the critical point in the mixture of liquid crystals with positive and negative diamagnetic anisotropies, where macroscopic diamagnetic anisotropy vanishes, are similar to those obtained in the solvent with negative diamagnetic anisotropy. However, significant distortions in the molecular structure attributed to solvent effects have been observed in liquid crystals with positive diamagnetic anisotropy. The minimum energy conformation has one C---H of the methyl perpendicular to the ring.

Item Type:	Journal Article
Publication:	Chemical Physics Letters
Publisher:	Elsevier science
Additional Information:	Copyright for this article belongs to Elsevier science.
Department/Centre:	Division of Chemical Sciences > Sophisticated Instruments Facility (Continued as NMR Research Centre)
Date Deposited:	01 Feb 2010 06:05
Last Modified:	19 Sep 2010 05:43
URI:	http://eprints.iisc.ac.in/id/eprint/22886

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