Issue 10, 2004
From the journal:

Chemical Communications

Crystal engineering of urea α-network via I⋯O2N synthon and design of SHG active crystal N-4-iodophenyl-N′-4′-nitrophenylurea

Sumod George,a   Ashwini Nangia,*a   Chi-Keung Lam,b   Thomas C. W. Mak*b  and  Jean-François Nicoud*c  

* Corresponding authors

a School of Chemistry, University of Hyderabad, Hyderabad, India
E-mail: ansc@uohyd.ernet.in

b Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, P. R. China
E-mail: tcwmak@cuhk.edu.hk

c Groupe des Matériaux Organiques, Institut de Physique et Chimie des Matériaux de Strasbourg, CNRS et Université Louis Pasteur (UMR 7504), 2 rue du Loess, 67034 Strasbourg Cedex 2, France
E-mail: nicoud@ipcms.u-strasbg.fr

Abstract

Crystalline nitrodiphenyl ureas adopt the N–H⋯O tape α-network only when stabilization accrues from the I⋯O2N or C[triple bond, length as m-dash]C–H⋯O2N synthon, otherwise the urea⋯nitro motif is preferred; soft, weak interactions can direct polar self-assembly in strong N–H⋯O hydrogen-bonded crystals.

Graphical abstract: Crystal engineering of urea α-network via I⋯O2N synthon and design of SHG active crystal N-4-iodophenyl-N′-4′-nitrophenylurea

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Article information

DOI
https://doi.org/10.1039/B402050B
Article type
Communication
Submitted
10 Feb 2004
Accepted
23 Mar 2004
First published
20 Apr 2004

Chem. Commun., 2004, 1202-1203

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Crystal engineering of urea α-network via I⋯O2N synthon and design of SHG active crystal N-4-iodophenyl-N′-4′-nitrophenylurea

S. George, A. Nangia, C. Lam, T. C. W. Mak and J. Nicoud, Chem. Commun., 2004, 1202 DOI: 10.1039/B402050B

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