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Issue 11, 2011
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A bis-urea naphthalene macrocycle displaying two crystal structures with parallel ureas

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Abstract

Herein we synthesized a bis-urea macrocycle from 2,7-dimethylnaphthalene that displays an unusual parallel urea conformation. The naphthalenes also adopt a bowl shape over the anticipated parallel planar orientation. Crystallization of the macrocycle from different solvent systems affords two solvated forms. 1·DMSO·(H2O)2 has an extended columnar structure where parallel macrocycles are linked by intervening hydrogen bonded water molecules. In 1·(MeOH)2 direct hydrogen-bonds link the macrocycles into chains, which hydrogen-bond with methanol molecules to form a layered structure.

Graphical abstract: A bis-urea naphthalene macrocycle displaying two crystal structures with parallel ureas

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Publication details

The article was received on 16 Feb 2011, accepted on 02 Apr 2011 and first published on 15 Apr 2011


Article type: Communication
DOI: 10.1039/C1CE05207A
Citation: CrystEngComm, 2011,13, 3665-3669
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    A bis-urea naphthalene macrocycle displaying two crystal structures with parallel ureas

    M. F. Geer, M. D. Smith and L. S. Shimizu, CrystEngComm, 2011, 13, 3665
    DOI: 10.1039/C1CE05207A

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