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http://hdl.handle.net/2289/2619
Title: | Structure and conformation of N, p-chlorophenylmaleimide in a nematic solvent by proton magnetic resonance |
Authors: | Khetrapal, C.L. Kunwar, A.C. Saupe, A. |
Issue Date: | 1977 |
Publisher: | Gordon and Breach Science Publishers. |
Citation: | Molecular Crystals and Liquid Crystals, 1977, Vol.40, p193-197 |
Abstract: | PMR studies of N, p-chlorophenylmaleimide in a nematic solvent have been undertaken. The structural and the conformational informations are derived. The distance-ratios of the phenyl protons show significant distortions from corresponding values in benzene. The data indicate that the molecule has a twisted conformation with C2-symmetry and that an exchange between energetically equivalent conformations takes place. Assuming a rigid conformation the angle b.thetas between phenyl and maleimide moieties is estimated to be 54.5°C. The data can also be interpreted by an exchange between planar (b.thetas = 0,180) and perpendicular (b.thetas = ±90) conformations. This possibility is discarded on the basis of theoretical considerations of the stability of conformations. |
Description: | Restricted Access. |
URI: | http://hdl.handle.net/2289/2619 |
ISSN: | 1058-725X |
Alternative Location: | http://dx.doi.org/10.1080/15421407708084482 |
Copyright: | 1977 OPA (Overseas Publishers Association) N.V. |
Appears in Collections: | Research Papers (SCM) |
Files in This Item:
File | Description | Size | Format | |
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1977 MCLC V40 p193.pdf Restricted Access | Restricted Access | 160.7 kB | Adobe PDF | View/Open Request a copy |
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