Crystal engineering of urea alpha-network via I...O2N synthon and design of SHG active crystal N-4-iodophenyl-N'-4'-nitrophenylurea |
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| Authors: | George Sumod Nangia Ashwini Lam Chi-Keung Mak Thomas C W Nicoud Jean-François |
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| Affiliation: | School of Chemistry, University of Hyderabad, Hyderabad, 500 046, India. |
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| Abstract: | ![]()
Crystalline nitrodiphenyl ureas adopt the N-H...O tape alpha-network only when stabilization accrues from the I...O(2)N or C[triple bond]C-H...O(2)N synthon, otherwise the ureanitro motif is preferred; soft, weak interactions can direct polar self-assembly in strong N-HO hydrogen-bonded crystals. |
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