title: Endohedral dynamics of push-pull rotor-functionalized cages.
abstract: A series of [Pd2L4] coordination cages featuring endohedral functionalities in central backbone positions was synthesized. Although attached via C[double bond, length as m-dash]C double bonds, the substituents behave as molecular rotors. This is explained by their pronounced donor-acceptor character which lowers rotational barriers and allows for electronic control over the spinning rates inside the cage. The dynamic behaviour of the free ligands, assembled cages and host-guest complexes is compared with the aid of NMR experiments, X-ray structure analysis and molecular modelling.
authors.affiliation: Faculty for Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Str. 6, 44227 Dortmund, Germany. guido.clever@tu-dortmund.de.
authors.forename: Marcel
authors.initials: M
authors.lastname: Krick
authors.affiliation: Faculty for Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Str. 6, 44227 Dortmund, Germany. guido.clever@tu-dortmund.de.
authors.forename: Julian
authors.initials: J
authors.lastname: Holstein
authors.affiliation: Institute for Inorganic Chemistry, Georg-August-University Göttingen, Tammannstr. 4, 37077 Göttingen, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Würtele
authors.affiliation: Faculty for Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Str. 6, 44227 Dortmund, Germany. guido.clever@tu-dortmund.de.
authors.forename: Guido H
authors.initials: GH
authors.lastname: Clever