Modulation and binding properties of extended glycoluril molecular clips

A glycoluril clip (1) provides a deep cavity for binding of guest molecules. Guest species interact preferentially viahydrogen bonding or ion–lone pair interactions. Complexation-induced conformational modulation of the cavity wall distance was observed. At higher guest–host ratios, inclusion compounds with organic guest molecules are obtained. The X-ray crystallographic structure of 1·(NH4PF6)·3CHCl3·2CH3OH shows formation of a network of clips connected via polar and non-polar interactions.

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