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)

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