American Chemical Society
ol701770h_si_004.cif (42.09 kB)

Formation of Ternary Complexes between a Macrotricyclic Host and Hetero-Guest Pairs:  An Acid−Base Controlled Selective Complexation Process

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posted on 2007-10-11, 00:00 authored by Tao Han, Chuan-Feng Chen
A triptycene-based cylindrical macrotricyclic host can include diquat and electron-rich aromatics simultaneously to form stable ternary complexes, which is stabilized not only by a charge-transfer (CT) interaction between electron-rich and electron-deficient guests but also by the face to face π-stacking interactions between the host and the guests. Moreover, a selective complexation process between a ternary complex containing benzidine and a binary complex can be effectively controlled by the use of acid and base.