Conformative alignment of isoquinolinyl substituents at the resorcinarene rim

All four isoquinolin-1-yl substituents at the upper rim of a resorcinarene adopt the same preferred conformation, with the lone electron pairs of the nitrogen atoms pointing towards the molecular bowl. Thus, an electron-rich narrow cavity is formed, suitable for linear molecules as molecular guests, such as CS2 and acetonitrile, but also flexible enough to incorporate benzonitrile.

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