title: A C60-templated tetrameric porphyrin barrel complex via zinc-mediated self-assembly utilizing labile capping ligands.
abstract: Coordination-driven self-assembly utilizing labile capping ligands has been exploited as a novel strategy for metallo-cage containers. Herein, we report a tetrameric porphyrin barrel complex [C60⊂Zn814(H2O)4(OTs)12](OTs)4 (2) (OTs = p-CH3C6H4SO3) formed from a tetrakis(bipyridyl)porphyrin ligand 1, Zn(OTs)2, and a template guest, C60 fullerene. The tetrameric-barrel 2 contains two kinds of bis(bpy) Zn(II) centers coordinated by TsO(-) anions which serve as labile capping ligands in the formation of the finite structure of 2.
authors.affiliation: Department of Chemistry, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Nakamura
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Ube
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Miyake
authors.forename: Mitsuhiko
authors.initials: M
authors.lastname: Shionoya