title: Synthesis of shape-persistent macrocycles with three 1,8-diazaanthracene units and their packing in the single crystal.
abstract: The synthesis of four shape-persistent macrocycles with three 1,8-diazaanthracene units each is reported (2,3 a-3 c). For two of them single crystals could be obtained and the structures in the crystal be solved. The structures reveal that macrocycle 2 self-dimerizes in the solid state; surprisingly it also forms a stable dimer in solution. The reason for this is seen in unusually efficient dispersion interactions as a consequence of the large contact areas in the dimer. All macrocycles are assessed as to their applicability in lateral polymerizations in the single crystal as well as in solution.
authors.affiliation: Laboratory for Polymer Chemistry, Department of Materials, ETH Zurich, HCI J541, Wolfgang-Pauli-Strasse 10, 8093 Zürich (Switzerland).
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.forename: Frank-Gerrit
authors.initials: FG
authors.lastname: Klärner
authors.forename: Junji
authors.initials: J
authors.lastname: Sakamoto
authors.forename: A Dieter
authors.initials: AD
authors.lastname: Schlüter
keywords: crystal packing; macrocycles; shape-persistence; supramolecular self-dimerization