title: Unexpected self-assembly of a homochiral metallosupramolecular M4L4 catenane.
abstract: Two enantiomerically pure 9,9'-spirobifluorene-based bis(pyridine) ligands 1 and 2 were prepared to study their self-assembly behavior upon coordination to cis-protected palladium(II) ions. Whereas the sterically more demanding ligand, 2, gave rise to the expected dinuclear metallosupramolecular M2L2 rhombi, the sterically less demanding ligand, 1, acts as a template to give rise to a homochiral metallosupramolecular M4L4 catenane.
authors.affiliation: Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard-Domagk-Str. 1 53121 Bonn (Germany), Fax: (+49) 228-73-9608.
authors.forename: Rainer
authors.initials: R
authors.lastname: Hovorka
authors.forename: Georg
authors.initials: G
authors.lastname: Meyer-Eppler
authors.forename: Torsten
authors.initials: T
authors.lastname: Piehler
authors.forename: Sophie
authors.initials: S
authors.lastname: Hytteballe
authors.forename: Marianne
authors.initials: M
authors.lastname: Engeser
authors.forename: Filip
authors.initials: F
authors.lastname: Topić
authors.forename: Kari
authors.initials: K
authors.lastname: Rissanen
authors.forename: Arne
authors.initials: A
authors.lastname: Lützen
keywords: 9,9′-spirobifluorenes; catenanes; metallosupramolecular chemistry; palladium complexes; self-assembly