科研之友
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摘要
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 center dot DMSO center dot(H2O)(2) has an extended columnar structure where parallel macrocycles are linked by intervening hydrogen bonded water molecules. In 1 center dot(MeOH)(2) direct hydrogen-bonds link the macrocycles into chains, which hydrogen-bond with methanol molecules to form a layered structure.
- 出版日期2011-6
